Product Colors and Sizes
- Black Friday product
- New Deal product
- Cyber Monday product
- Sale product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
- Black Friday product
- New Deal product
- Cyber Monday product
- Sale product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
Forclaz MT500, Insulating Inflatable Backpacking Mattress, 1 Person, 71" x 21"
Its R-Value of 3.3 means this mattress is perfectly suited for 3-season use. Its weight is still low (1.5 lbs). And its pouch also turns into a pump bag!
Free returns
Free shipping over $35
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features

Easy Transport
Weight: 1.5 lbs. Volume: 3.4 liters. Carrying pouch turns into a pump bag
Sleeping Quality
Size 70.9" x 20.5" x 2". Rectangular shape. Comfortable, thick mattress
Thermal Insulation
Usable in 3 seasons. R-Value 3.3 according to standard ASTM F3340-18
Easy Assembly / Dismantling
Inflate with the built-in pump bag. Bi-valve: in with anti-blowback; out to deflate
Traction
Anti-slip silicon pads. Limits the sleeping bag from sliding
Eco-Design
We dye every other thread to reduce water consumption
Product Customer Reviews

Rapide à gonfler, il isole bien de l'humidité du sol. Une vidéo pour le replier correctement serait un plus.
Additional Product Information
Composition
Main fabric
- 50% Polyester cationic
- 50% Polyurethane
Volume and folded size
Folded dimensions Ø 4.7" x 11.8". Volume: 3.4 liters.
How to inflate your mattress
To prevent moisture from being blown into the mattress, we recommend that you use the pump bag in the pouch. To do this, unroll the entire pump bag/pouch. Connect the valve of the pump bag to the “in” valve of your mattress. Blow to about 4"-8" from the inlet of the pump bag, to inflate the main volume as much as possible. Roll the bag on itself to the valve to push the air out of the main bag into your mattress.
What is the r-value?
The R-Value is a measure of the thermal insulation. It measures the ability of a mattress to retain or prevent heat from escaping from a warm body (human body) to a cold floor. The higher the R-Value, the better the insulation of the mattress. Please note that the R-Values can be added; this means that you can use 2 mattresses and add their R-Values. All our mattresses are tested to standard ASTM F3340-18.
What r-value for what use?
R-value from 0 to 1.9: Hot season (summer) only R-value from 2 to 3: 2 or 3-season (spring-summer-fall) R-value from 3 to 4: 4-season R-value of 4.5 and higher: Use in all 4 seasons and in extreme conditions (glacier, far north, and high altitudes)
Tips for sleeping well on your mattress
Once you are lying down, remember to adjust the inflation pressure of the mattress by slightly pressing the in valve (open cap). A mattress that is too hard is often synonymous with discomfort. Silicone patches on the top of the mattress are designed to reduce the sliding of your sleeping bag on the mattress.
Additional sustainable development information
Textile dyeing requires a lot of water but also produces waste water from the dye baths. To reduce this impact on the environment, we use only mass pigmentation on 1 yarn out of every 2 for the gray fabric on the back of the mattress, thus reducing our consumption and our impact on water. In addition, 70% of the fill used as insulation is recycled polyester. These actions allow us to reduce CO2 emissions by 12%.
How to repair a leaky mattress
An inflatable mattress is not puncture-proof but it can be repaired! In use, as much care as possible should be paid to its set-up and handling. In the case of a problem, we recommend you use adhesive repair patches (ref: 8584596). For more information, copy the following link into your search engine: https://www.forclaz.co.uk
Origin
Imported
Storage instructions
In order to improve the durability and reliability of your product, store it laid out flat with the valve open in a dry place away from extreme temperatures.
Superior quality. Unbeatable prices.
For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.
Decathlon makes the difference
-
Research and development
delivers high-quality cost-effective products
-
State-of-the-art production processes
minimize manufacturing costs
-
Optimized supply chain
reduces retail prices
-
Minimal retail footprint
lowers overhead and indirect costs

Forclaz MT500, Insulating Inflatable Backpacking Mattress, 1 Person, 71" x 21"
Your location: City, ST
Please enter a valid city with state or zipcode. Example: San Francisco, CA or 94101
Order online for
Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
