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Forclaz M100 Foam Hiking Mattress

Regular price: $14.99 Regular price:

7.4 oz the lightest foam mattress and groundsheet.70.9" x 19.7" x 0.3" for minimal comfort. 10-year warranty.

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Sale price: $14.99 Regular price:

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About this item:

  • R-Value 1.2 I Ideal for Warm Environments: >59°F/15°C
  • Dimensions 70.9” x 19.7” x 0.3”
  • Easy to transport: Weight: 7.4 oz (210 g) | Packed Volume: 6.6 L
  • 10-year warranty.
Model: 5591048

Product Videos

Product Features

A photo of the Forclaz M100 Foam Hiking Mattress in use

Forclaz M100 Foam Hiking Mattress | Passionate about backpacking,our designers have imagined this mattress to protect themselves from ground&sleep in trek/bivouac/protect your inflatable mattress.

7.4 oz the lightest foam mattress and groundsheet.70.9" x 19.7" x 0.3" for minimal comfort. 10-year warranty.

Abrasion resistant

Alu film on upper surface reducing abrasion and increases thermal insulation.

Easy to transport

Weighs 7.4 oz. Volume when rolled: 6.6 L. Elastic strap.

Sleeping comfort

Dimensions 70.9” x 19.7” x 0.3”. Simple and cursory postural comfort.


Ideal for warm environments (>59°F).R-Value 1.2

Easy assembly/dismantling

Rolled foam. Elastic strap.

Questions & Answers

Product Customer Reviews

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Very good

Lightweight and easy to carry in your backpack on your way to Santiago

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I used this mat exclusively to cross the Pyrenees in the summer (cause of mattress puncture, etc.), the comfort remains modest, you just need an assessment of the terrain to sleep on it in good condition. Very robust and light, it is the minimum to take on a trek over several months.



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A thick model

Stone and soil oil is felt, a thicker model can be chosen

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Product meeting my…

Product meeting my expectations.

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Mountain foam mattress


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product conforms to my…

product meets my expectations

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For occasional nights…

For occasional nights in a tent it does the trick A good product like many products from Decathlon

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A tent essential

The mattress is used by the daughter for trips to the forest. I tried it myself and it is a great product with an unbeatable price/performance ratio

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Good value for money

Good value for money

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It's lovable, but thin of course.

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Good value for money

Good value for money, light, does not take up space once rolled, let's see over time whether it holds up with wear on various soles.
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Additional Product Information

Volume and dimensions when folded

Rolled dimensions Ø 5.1” x 19.7”.Volume 6.6 L.Density of the foam 66.1 lbs/m3.

Thermal properties and warmth

Sleep on aluminized side, facing the sleeping bag with foam side on the ground to minimize losses of body heat.R-Value 1.2 (measured by EMPA, an independent laboratory).The R-Value is a measure of 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 is equivalent to a minimum temperature rating of approximately -11°F. 0.7 is equivalent to a temperature rating of +52°F.R-Value is not a standard (in progress).

Product test

The sleeping comfort, also known as ”postural comfort,” of the mattresses is defined by our Research and Development Center. All our mattresses are subjected to mechanical tests to check the performance and resistance of the mattress in order to guarantee you the best sleep and the best recovery. We also carry out numerous field tests in real-life conditions.

Product testing

This mattress is guaranteed for a period of 10 years from the date of sale indicated on the 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
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


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