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Forclaz Trek 100, Folding Foam Hiking Mattress
13.1 oz. 70.9" X 21.7" X 0.8". Foam mattress - the most versatile groundsheet and very lightweight. 10-year warranty. Accordion folding back on itself.
Free shipping over $35
See our return rules
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San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features

Abrasion resistant
Film that prevents abrasion.
Easy to transport
13.1 oz. 11.5 liter volume. Accordion folding shape. Elastic support trap.
Sleeping comfort
Dimensions 70.9" x 21.7" x 0.8".Deep, thick and comfortable. Thermal insulation.
Warmth
Ideal for temperate environments (>41°). R-Value 2.5
Easy assembly/dismantling
Easy accordion folding. Use as a seat, mat, cushion or half-mattress.
Product Customer Reviews

Easy to use and transport. Doubled as a seat cushion on long hikes, but used mainly as a Sleeping Mat under my Sleeping Pad. Did an excellent job on my back country camping trips in Ontario.
Hello Jj,
We are go glad to hear, thank you for your review!
Jessie
Excellent products. Lightweight for carrying & tough on the rocks of Scotland. Loved how warm it kept your behind whilst sat on it.
All Good
Purchased for 12 year old boy for his first scout camp and he loved it!
Owned for over a year used several times. Absolutely would recommend it. Packs small.
Does what it says, great comfy product.
Nice
OK I've literally just had it but have tested it on loads of bags of frozen veg. I've had tons of foam mats, military, nemo, multimat, exped to name a few and can already tell this is going to be my go to mat. It's one of the warmest, comfy, slightly wider without being ott and I prefer the folded dimensions and colour. Exceptional value and brilliant service from this site. Thank You guys.
👍👍👍👍👍
Nice lightweight piece of gear and very competitive. Good to top up the r value of your sleep system.
Light and comfy. Bought it for cycle touring - and fits nicely on my back pannier rack lengthways, just tucked under the seat.
Does what it states bit big but ok I’m going to be reviewing a lot more camping hiking products on u tube channel unknown camper
Good for sleeping on, better than foam roll mat
Bought this sleeping mat as I forgot mine on a trip and went past a decathlon. Now it's pretty much my main sleeping mat Good weight Comfortable enough (never had a bad nights sleep) Good price
Takes a bit of room when packed and not in use but does the job nicely when sleeping
Additional Product Information
Composition
Foam
- 100% Foamed polyethylen
Volume and dimensions when folded
Folded size 5.9" x 5.5" x 21.7". Elastic support strap. 11.5 liter volume. Weight including the pack: 13.4 oz Foam thickness 65 lbs/m3.
Thermal properties and warmth
Sleep on the aluminized side, facing the sleeping bag with the foam side on the ground to minimize the loss of body heat. R-Value 2.5 (measured by EMPA, an independent laboratory). The R-Value is a measure of the thermal performance and insulation. The higher the R-Value, the more the mattress insulates you from the cold ground. An R-Value of 5.9 means a minimum temperature of use of approximately -11°F. 0.7 is equivalent to a temperature rating of +52°F.
Thermal properties and warmth (2)
The R-Value is not a standard, each manufacturer can use their own criteria. A standardization process is currently underway.
Comfortable postural support
For a foam mattress, this mattress offers a greater level of comfort thanks to its design and the depth given to the foam by the mold. This specific design allows for 0.8" mattress thickness, giving home comfort and real postural support.
Origin
Imported
Product testing
This mattress is guaranteed for a period of 10 years from the date shown on your sales receipt. The product covered by the warranty will be repaired or exchanged free of charge. The warranty covers the defects of your mattress apart from those resulting from normal wear and tear and improper use. This special 10-year warranty is only valid with the product and sales receipt.
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
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Research and development
delivers high-quality cost-effective products
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State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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Minimal retail footprint
lowers overhead and indirect costs

Forclaz Trek 100, Folding Foam Hiking Mattress
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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.
