Hypervent Aire-Flow™ Moisture Barrier

SKU: Aire-Flow
53 questions,   181 answers

Aire-flow™ is designed to prevent moisture build-up underneath mattresses, bunk pads, and cushions. Note: Sold by the Linear Foot Learn more

Prevent Moisture Under Mattress
Prevent Condensation Under Mattress
Rolled Up Moisture Barrier
Plush Firm

Questions? Speak to a mattress expert at 1-888-488-1468

Your price:
$9.99 + Free shipping
Maximum Uncut Length of 50' Feet?
Text Tooltip Quantity?

- or -

SALE ENDS: Wednesday, October 16

Hypervent Aire-Flow™

Mattress Underlay

for Mattresses & Cushions


Free FedEX Shipping!

Size/Shape Can Be Customized Upon Request


Are you looking for a solution to mold, mildew, dampness, or moisture build up under your mattress, bunk pads, or cushions?  


The most practical and affordable solution is the Hypervent Aire-Flow™ Mattress Underlay.  Simply place the material underneath your mattress or cushions to minimize moisture buildup.


What's causing this problem in the first place?


Mattresses in Boats, RVs, Trucks, and Aircraft usually rest on plywood or other types of flat hard surfaces.  Most of those surfaces provide minimal air circulation underneath your bed. 


When you're sleeping, your body heat increases the temperature of the mattress.  Some of that heat radiates out of the top and sides of the mattress, but a lot of it radiates out of the bottom.  


If the surface the mattress is lying on is colder than the mattress itself (it usually is), that temperature difference can cause condensation to form.  And if the condensation can't evaporate, it can lead to mold or mildew buildup.  


How does Hypervent Aire-Flowresolve my issue?


Hypervent Aire-Flow™ provides unobstructed airflow by elevating the mattress off the sleeping surface...kind of a like a magician's assistant in a Vegas magic show. :-)  


When the mattress is elevated, warm air is able to circulate under the mattress which minimizes conditions necessary for condensation.


If condensation does occur, the Hypervent Aire-Flow™ material allows that moisture to evaporate.


What is Hypervent Aire-Flow?

It's a 3/4" industrial-grade woven polymer material bonded to a breathable fabric.  The material was originally designed for water drainage in parking structures and soccer fields.  



  • Allows for unobstructed airflow under your mattress
  • Light weight material weighing only 4.3 oz per sq yard
  • Easily bends around door ways and tight spaces
  • Maintenance free
  • Unaffected by cold temperatures
  • Very strong but flexible (can support very heavy people)
  • Holds it's shape indefinitely and outlasts your mattress
  • Can't be felt underneath your mattress
  • Easy to clean and dry (soaps, hot water, or steam cleaning is ok)
  • Easy to join multiple pieces together.  Simply apply adhesive or tape to a 3" overhanging flap.
  • Easy to cut with a pair of scissors


Hypervent Aire-Flow™ is available in widths of 39" and lengths of up to 50 feet.


How do I order?

Choose the number of linear feet you'd like from the drop down menu and click "add to cart".  If you're not sure how much you need, give us a call and we can help!

Please note - due to the custom nature of this product, we do not accept returns once an order has been shipped.


Custom Sizes & Shapes

Need us to cut it to fit your mattress for you or are you unsure of how much length you need?  Give us a call 888-488-1468


Shipping and handling time

This will ship from our plant in SC.  Allow 2-3 business days before shipping.  In a hurry?  Give a call and we can usually get your order out within 24 hours.

The Hypervent Aire-Flow™ material will be cut to your desired length, and we'll roll it up and put it in a shipping box.  When it arrives, it looks like rolled up carpet.  

Non-Contiguous States & Canada Shipping: If shipping to Alaska, Hawaii, US Territories, or Canada, please call for shipping costs. Remote areas may be assessed higher shipping fees. The customer is responsible for all customs fees when shipping to Canada.


Other applications besides boats and RVs:

  • Aircraft
  • Truck campers
  • Semi trucks
  • motorhomes
  • Travel Trailers or Fifth Wheels
  • Pop-up Campers
  • Sleeper Sofas (can't be folded into couch)
  • Homes or mobile homes
  • Apartments
  • Pet beds
  • Dock lockers, boxes, sail and rope lockers, drawers, ice boxes, refrigerators
  • Cans or metal containers to prevent rust
  • Near bilge pump intakes in order to reduce the possibility of clogging.
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 53 questions Browse 53 questions and 181 answers
Why did you choose this?
Mattress Insider Store
My RV mattress gets damp underneath when winter camping
Lyle T on Oct 15, 2019
Van Life requires this product.
Bill G on Oct 12, 2019
My RV mattress gets damp underneath when winter camping
Lyle T on Oct 15, 2019
I'm hoping it makes a difference in the air flow under my mattress.
Jennifer M C on Oct 13, 2019
Van Life requires this product.
Bill G on Oct 12, 2019
I read it was the best thing to get for my RV mattress :)
Maria G on Oct 1, 2019
It's exactly what I was looking for!
Julia D on Sep 30, 2019
Ordered to help protect our mattress in our RV.
Edward R on Sep 30, 2019
Lynda B on Sep 29, 2019
To reduce moisture under my mattress in my pop up truck camper.
lori G on Sep 26, 2019
We saw Aire-Flow Moisture Barrier on a few RV living sites.
Skochii B on Sep 22, 2019
to combat moisture under my rv mattress
Lisa S on Sep 13, 2019
To control moisture and the videos we watched.
Judith S on Sep 9, 2019
Need something like this for my boat cabins. Looked at many products on line and this is the one that appears will work the best for me. If so, I'll order for the other three cabin mattresses.
Michael H on Sep 5, 2019
Just purchased a new foam mattress for camper. Did internet search for this type product and found this.
Robert J on Sep 3, 2019
We use this product under our foam mattresses. It doesn't effect the feel of the mattress and it works!
Katrina A on Sep 2, 2019
It works.
Rene Didier E on Sep 1, 2019
I intend to use it under the mattress cushions in a 34' sailboat.
David M on Aug 25, 2019
Recommended online
CLW on Aug 20, 2019
platform bed
Lisa K on Aug 18, 2019
Recommended by the c-brats
Jody K on Aug 13, 2019
Used similar product years ago on our boat and it worked very well.
Richard F E on Aug 9, 2019
too much moisture under the mattress of my boat
Shaun M on Jul 25, 2019
To prevent moisture building up between RV mattress and the wood base.
Lovella K on Jul 25, 2019
a client specified this product in order to dry-store cushions in a garage.
John M on Jul 23, 2019
Trying to create a lift and breath space under my campers mattress...
Gary G on Jul 21, 2019
Checked out the reviews of other RV'rs and this product was most recommended to prevent moisture under RV mattresses.
Kathy W on Jul 21, 2019
Watched a video from Tyson at Adventure Rig on this product, and we are outfitting our V-Birth with new foam and wanted to have a air flow under the bedding. This product seems like it will solve our issues.
Ashley C on Jul 21, 2019
Worked very well for us on our sailboat, Now going to use in our fifth wheel trailer.
Kevin B on Jul 18, 2019
Many good reviews to use for a hybrid rv for the mattress.
Keith E on Jul 1, 2019
Have moisture on our RV tent pushups under the mattress.on the platform.
Edward S on Jun 29, 2019
Hoping to combat moisture under our memory foam mattress in our camper
Connie S on Jun 25, 2019
protect the mattress
William N on Jun 21, 2019
Recommendation from Truck Camper RV page on FB.
DWIGHT J H on Jun 18, 2019
good reviews and want for rv mattress
Karen N on Jun 17, 2019
Looking for condensation prevention in my hybrid camper.
Chris W on Jun 17, 2019
Look good for rv purposes!
Alain D on Jun 16, 2019
Kristin S on Jun 10, 2019
Trying to see if will help keep thing dryer
Marsha B on Jun 6, 2019
Heard good things about this product from camping groups
catherine c on Jun 3, 2019
to prevent moisture in RV bed
Sarah W on Jun 2, 2019
for use under teardrop trailer mattress. to prevent moisture build up
Laura W on May 29, 2019
ordered 10ft previously for queen mattress, needed more to complete the coverage.
Robert C on May 29, 2019
New to RV'ing and a lot of people recommended this item.
De Anna O on May 28, 2019
We purchased this product to use in our RV & wanted to make sure we protected our mattress in all weather conditions.
Janet K on May 26, 2019
Good reviews on Four Wheel Camper FaceBook Page
David C on May 25, 2019
To reduce RV mattress moisture
Sarah W on May 24, 2019
To solve condensation problems under RV mattress
Bruce H on May 13, 2019
Used before on my boat, worked great. Now need for RV.
Rick Y on May 13, 2019
air flow under RV mattress
Nancy I on May 12, 2019
Looking for a anti-condensation solution in my roof top tent. Hoping this gets it done.
Matthew H on May 8, 2019
Recomended by the manufacturer of my Northern Lite Camper
Richard H on May 4, 2019
I'm hoping it makes a difference in the air flow under my mattress.
Jennifer M C on Oct 13, 2019
I read it was the best thing to get for my RV mattress :)
Maria G on Oct 1, 2019
Can I trim it to fit?
A shopper on Mar 14, 2017
BEST ANSWER: Hello! I do not see a problem if you were to trim it yourself but why not let us do the work? Simply give us a call with you dimensions and we can process your order with the correct dimensions!
I need 2 beds cut. One is 54x80 and second is 28x75. What would my total cost be ?
Michael on Dec 6, 2017
BEST ANSWER: Hello Michael,
Please give us a call at your convenience (888-488-1468) to discuss your pricing and availability.
Kind Regards!
How many rolls would I need for a queen rv mattress?
Sheila C on Dec 6, 2017
BEST ANSWER: I ordered a single roll 10 feet long by 39 inches wide. I then cut the roll in half to form 2 sections each measuring 60 inches (5 feet) by 39 inches. I joined them to form a pad 78 inches by 60 inches to fit under my 80 inches by 60 inches RV mattress.
Which way is "UP"?
Richle Rich on Jan 6, 2018
BEST ANSWER: Hello! We recommend the fabric side go up against the mattress. Please give us a call if you have any other questions or concerns!
Does it make a crunching sound when you lay on it?
A shopper on Oct 6, 2018
BEST ANSWER: No. I have a very good (thick) memory foam mattress on top of it and the only time I even notice it is when I change the sheets. And even though we've had a very moist summer, there is no sign of mold or mildew!
How do I place the order?
A shopper on Jul 28, 2018
BEST ANSWER: Hello! Simply give us a call to place a order!
Does it have an off gassing smell?
A shopper on Feb 19, 2019
BEST ANSWER: The Hypervent Moisture Barrier does not have an off gassing smell. Also, all of our mattress are made in the USA, with USA made components. Nothing is outsourced. Our mattresses do not have an off gas smell, they are Certipurus certified:
The foam used in our mattresses has been tested, analyzed, and certified by the independent laboratory CertiPUR-US®! What does this mean?
CertiPUR-US® certified foams are tested for foam composition and durability. The foam is examined and put through an exhaustive series of tests to ensure it meets strict standards
CertiPUR-US® certified foams are... nontoxic

Low emission (low VOC's) for indoor air quality (VOC's are a large component of air pollution)
Manufactured without chlorofluorocarbons (CFCs) or other ozone depleters (commonly found in imported foam)
Made without PBDE flame retardants (PDBE's have been linked inconclusively to chronic illness in humans and animals)
Made without mercury, lead and heavy metals
Made without formaldehyde (Formaldehyde has been labeled as a cause for poor indoor air quality)
Made without prohibited phthalates
Tested and approved for durability and performance
Virtually Odorless - Our foam is virtually odorless because of the patented Fresh Foam Technology™ used during the manufacturing process.
What about between the mattress and the smooth side of this material? The aire-flow material provides airflow between mattress and floor, but none between the material and the mattress itself... Won't mildew develop there??
Debi C on Feb 2, 2019
BEST ANSWER: We’ve had ours for 18 months and we haven’t had any issues with mildew or moisture between the material and the mattress. We have had moisture between the plastic part and the bed frame and the barrier has worked as intended, preventing that moisture from reaching our mattress.
How do I cut material?
A shopper on Apr 13, 2018
BEST ANSWER: Hello! We recommend using a utility knife or commercial shears! Please let us know if you need further assistance!
How long does it take to get it?
Janenne P on Oct 13, 2017
BEST ANSWER: I don't recall exactly how long it took for it to arrive since I purchased it a while ago
but it wasn't too long--less than 2 weeks for sure.
Aire-flow moisture barrier........what side goes towards mattress?
Elizabeth B on Dec 21, 2017
BEST ANSWER: Hello Elizabeth,
The "smooth" side of the moisture barrier should be up towards the mattress, while the rough "indoor turf looking" side will be against your base.
Kind Regards!
how thick is Aire- flow?
e b on Nov 21, 2018
BEST ANSWER: I think it's about a half inch, although I haven't measured it.
How do you put it under a mattress that is already there?
Shirley R on Oct 14, 2018
BEST ANSWER: Aire-flow is a layer about 1 inch thick that goes between the bed frame and the mattress. If you cannot separate the mattress from the frame I do not think this will work for you.
How do I join two pieces?
A shopper on Sep 19, 2019
BEST ANSWER: They don’t actually join. There is a flap of thin fabric along the edge that overlaps the second piece and sort of holds them in place. They don’t move after the mattress is placed on it. Just place the two pieces close together with the edge of the fabric overlapping.
We are having a problem with tape (duct, vent, etc) not sticking to the fabric of our Aire-Flow sections. What adhesive is advisable?
A shopper on Oct 19, 2018
BEST ANSWER: Hello! If you are unable to find a strong enough industrial tape I would recommend an adhesive putty that some other users have had success with. Here is a link to it: https://www.officedepot.com/a/products/836319/DAP-BlueStik-Reusable-Adhesive-Putty-1/?cm_mmc=PLA-_-Google-_-Tape_Adhesives-_-836319&gclid=EAIaIQobChMIssPlwryT3gIVBoVpCh0tsAWVEAkYASABEgLEM_D_BwE&gclsrc=aw.ds
Can i use as tub mat?
A shopper on Aug 23, 2018
BEST ANSWER: Personally I would not recommend this as a tub mat. It does not seem best suited for direct point pressure, such as for feet. It is also backed by a "fabric-type backing that would likely break down with copious amounts of water.
Would this work to put between a ‘plastic’ dorm mattress and a memory foam mattress topper? If so, would it still work if I put a sheet and mattress pad covering all of the layers together (dorm bed, aire-flow, memory foam)?
Kirsten F on Jun 27, 2018
BEST ANSWER: Hi Kirsten! Moisture tends to build up underneath a foam mattress that is sitting on a platform. It is not recommended to place the Aire-Flow between two mattresses. Please give us a call to discuss further!
Adjustable Bed - There are a couple of Q & A about adjustable beds but they did not address my concern. I have a memory foam mattress on an adjustable base and the base is covered in fabric. I'm concerned with the polymer side down against the fabric covered base. So, when adjusting the bed will the polymer be abrasive to the fabric covered base?
Sir Jeffrey on May 18, 2019
BEST ANSWER: I’m not the manufacturer. This is just my opinion (F. W. I. W. ). I would not think it would be abrasive. If I had an understanding of the need for the material covering the base, I might be better able to address your concern. The rational in which I use the material is to keep separation between the mattress and base for air movement or to allow the mattress to better breathe in a stagnant air space
How often do you have this sale? Our trailer wont be ready for another 11 months
A shopper on Apr 19, 2019
BEST ANSWER: Our sales do run periodically. If there is no sale showing on the website at the time you ready to order, please feel free to contact us & ask for a discount.
I have a 72x80 short king rv mattresses and would like to know how much of the aire-flow moisture barrier to order?I would like to order a little extra to place along the wall where the mattress touches as well in the slide out.
Darren A on Feb 28, 2019
BEST ANSWER: Hello! We would recommend ordering at least 20 Linear feet in order to complete you task! Please give us a call if you need further assistance!
Can? you lay this between 2 mattress for protection of mold I purchased a bunkie board to go under my new mattress cause it sag in the middle I like to use this between mattresses to keep each mattress safe from mold
Babygirl on Feb 27, 2019
BEST ANSWER: Hello Marilyn,
Thank you for your interest in Mattress Insider! The Hypervent Aire-Flow Moisture Barrier is made to sit on a solid surface, under the mattress, to help avoid condensation developing. It is not recommended to place this item between two mattresses as this will not allow airflow. We would also never recommend placing one mattress on top of another. If your mattress is sagging, the mattress placed on top of it will also create that same sagging issue over time. Please feel free to contact us with any further questions.
Kind Regards!
Does this product contain natural latex rubber?
Barb G on Feb 19, 2019
This product does not contain latex, it is a synthetic polyurethane product.
Kind Regards!
Does it collapse under heavy weight?
A shopper on Jan 24, 2019
BEST ANSWER: The Aire-Flow Moisture Barrier is made to support the mattress and persons sleeping on top and will not collapse under heavy weight.
Kind Regards!
I have 3 bunk mattresses size 76X30 ! How much will I need to purchase ? Also what other materials will I need to install it ?
A shopper on Dec 12, 2018
BEST ANSWER: You would need 19' Feet total. When delivered, you will cut it in correct sizes and place, smooth side towards your mattress, in the space. No other materials are required. Kind Regards!
Do you have measurements to custom cut for 2 twin beds on the Oliver Elite II? What is the total cost including shipping?
A shopper on Dec 7, 2018
BEST ANSWER: Hello, We don't keep measurements for RV's as there are numerous makes, models and years. Please measure your space and contact us directly at 888-488-1468. Thank You!
Mattress measures 6ft l x 5ft w how many would o need?
Laura E on Nov 27, 2018
BEST ANSWER: Hello Laura,
You would need a total of 10 ft. You would cut it in 2 - 5 ft pieces and place them side to side across the width of the mattress. This would leave an extra amount of 6 inches to trim at the foot.
Kind Regards!
is this product available in south africa ?
Aebi E on Nov 14, 2018
BEST ANSWER: Hello Aebi,
We do ship out of country. There is an additional shipping fee and you will also be responsible for any additional taxes or fees due upon delivery. You may contact us directly at orders@mattressinsider.com with the quantity you will need and your shipping address to receive a quote.
Kind Regards,
I just ordered 8 feet (8' x 39") for my RV. The length beyond 80" will be for the head of my queen mattress that rests against an outer wall to prevent frost. It is not the full width of my queen mattress. Has anyone else done it this way? I've read it isn't necessary to cover the full width. It is just me and my Weimaraner in bed at night.
A shopper on Nov 9, 2018
We do suggest covering the full space under your mattress because anywhere that the mattress touches the platform, when not allowed for airflow, can develop condensation and possibly mold / mildew. To cover the whole surface of a 60 x 80" space, you would need 10' total (2 - 5' pieces placed across the width of the platform and taped together in the middle).
Kind Regards!
Hi. I have a basic twin sleeper chair which has a foam mattress resting on a solid fabric type structure. We noticed in one of the two beds that we have what could be a mold/mildew situation starting. We have cleaned it and the chair/bed is now actually been moved to another residence (daughters apartment). See it happening again. It is used for occasional overnight purposes. Would this product be helpful in this situation? And can it be malleable to fold up when the mattress pull out is converted back to seating?
Debbie B on Nov 4, 2018
Yes, the Aire-Flow Moisture Barrier will help avoid any further condensation, therefor avoiding mold & mildew build-up. You may need to cut the mat in to 3 separate pieces to fit your frame so it will fold correctly in to the sleeper chair.
Kind Regards!
Can you buy this in Canada anywhere? Need for the winter in my RV
A shopper on Oct 4, 2018
BEST ANSWER: Hello! We can certainly ship to Canada! Please give us a call to discuss!
4.7 / 5.0
70 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Moisture barrier works
This product is amazing!!! We had used it before on our trawler under the mattresses, sofas, it works to keep everything dry and mold free. We now have put it in our RV under the beds and sofas....... we live in FL and lots of humidity...... we NEED this product!!! You wont be disappointed !!!
May 22, 2017
over 2 years ago
Wonderful product
I use this under my dog's mattress in his kennel, as well as beneath one of my memory foam mattresses that is supported by a sheet of plywood instead of the typical slats that support a mattress. The ability for air to flow beneath memory foam is important, particularly the dog bed. The aire-flow moisture barrier hasn't just prevented moisture from forming beneath the mattress, but has prevented unpleasant aromas from forming in the kennel as well.
May 22, 2017
over 2 years ago
We have had moisture issues with our mattresses in our Airstream and even mold even while the coach was heated. Aire-flow has completely eliminated this problem and I ordered another piece to insert behind our couch which touches the outside wall and creates moisture. I’m confident I won’t have that problem any longer there either. Excellent product.
December 4, 2017
1 year ago
Excellent service!
Really impressed with the customer service so far with Mattress Insider. They were able to cut the material to the exact shape of the sleeping area in my boat. Can't wait to receive it!
February 1, 2017
Solved a thorny problem
We had some moisture and minor mold problems with the previous foam mattress in our RV. We found the replacement mattress we wanted but wanted to make sure we didn't have the same problems again. Aire-Flow saved me from having to do extensive modifications to our bed platform and/or design and build a slat system. The only reason I didn't give the product a fifth star is the price... a bit costly in my opinion.
November 8, 2017
over 2 years ago
Love the product, helped a lot with the moisture. Also added a little bit of cushion. Fast Shipping!!!!
October 16, 2017
over 2 years ago
used in RV
I purchased this to use in our airstream between the mattress and the wood platform it lays on to reduce moisture. The material is of good quality for this purpose and it seem like it will do a good job. So far it is working fine but havent had it installed long enough to really tell. It was received quick and packaged nicely.
May 3, 2017
over 2 years ago
A worthwhile investment to prevent a costly problem
The Aire-Fliw moisture barrier arrived on time as promised and the size was as ordered. Installation was easy. There is absolutely no difference in the comfort of our travel trailer bed. It will provide air flow as intended.
May 22, 2017
over 2 years ago
No moisture problems on our boat mattresses, except on the sides where we didn't install barrier.
December 19, 2017
over 2 years ago
Has solved our condensation issues in our RV. The mesh is much more ridged than we expected, so it adds plenty of loft under the mattress, but remains able to be cut with scissors.
November 27, 2017
1 year ago
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