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Forclaz Trek 500L Self-Inflating Backpacking Mattress

Sale price: $49.99 Regular price:

You will like the easy inflation of this MT100 self-inflating mattress. And its 2.5 cm thickness provides good comfort.

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Sale price: $49.99 Regular price:

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About this item:

  • R-Value 2.7 2 to 3 seasons of use (>5°C/41°F)
  • Weight:1.8 lbs. Dimensions: 70.9” x 20.5” x 1” Packed Volume: 7 L Ø 6.9” x 13”.
  • Easy assembly/dismantling: Self-inflating. Efficient 2-way valve with anti-return for easy handling. Carry Bag Included
Model: 8736599

Product Videos

Product Features

A photo of the Forclaz Trek 500L Self-Inflating Backpacking Mattress in use
A photo of the Forclaz Trek 500L Self-Inflating Backpacking Mattress in use

Forclaz Trek 500L Self-Inflating Backpacking Mattress | Our designers, who are trekking enthusiasts, designed this compact mattress to insulate you from the ground and sleep well while bivouacking.

You will like the easy inflation of this MT100 self-inflating mattress. And its 2.5 cm thickness provides good comfort.

Easy to transport

Weighs 820g. Volume: 7 litres. Ø 18 cm x 29 cm.Carry bag.

Sleeping comfort

Dimensions 180 x 52 x 2.5 cm. Thermal insulation. Adjustable comfort.

Thermal insulation

2 seasons of use (>5°).R-Value standard ASTM F3340-18: 2,7

Easy assembly/dismantling

Self-inflating. Efficient two-way valve with anti-return for easy handling.


Anti-slip silicon pads. Limits slippage of the sleeping bag.

Questions & Answers

Product Customer Reviews

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Very bad sleeping

It’s a shame that we’re poorly installed because transportation is very practical.

Got a hospital emergency and I had no place to sleep but with a big ward room. To accompany my unwell kid, I had to find an alternative bed to sleep on the floor. Got a Decathlon store 5 mins away, I had to buy a quick mattress. I find this self insulating mattress to be super convenient compared to hand pump ones. In the long term I think this is a good product to store and to sleep on. Not just for camping. I slept 6 hours on it comfortably. Highly recommended for everyone to use indoors and outdoors.

conforms to the descriptions

a bit cumbersome. comfortable, easy and quick to inflate as well as deflate and fold


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Self inflates, has an in and out valve. Easy to use and portable. Very affordable compared to branded ones. Not sure about shelve life but never try, never know. So far the quality seems good.

The overalls are slipping!

The overalls constantly slip because the anti-slip tapes on them are not enough. That's why you can't sleep comfortably, you wake up frequently at night and have to fix yourself.


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It takes a long time to inflate; but it’s convenient!

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A light and compact mat. If you measure 2 meters, it will probably be short.

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Light, easily portable, functional as it should be. Balanced price/performance ratio.

Bought for water, functionally fine.

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Practical, comfortable despite its low thickness

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Very pleasant, the anti-slip pads are very well thought out.


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goes beyond what is required

I have tried it in trekking (tents and shelters) and in the middle of the mountains. The adhesive strips do their job, the bag does not slide. The auto-inflation system depends a lot on height, but nothing that cannot be compensated for by blowing to increase the pressure. As they are R2 on snow, additional insulation is required (or another mat with better performance). I use an EVA mat (insulates heat and punctures) if it is for long treks.
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Additional Product Information


Foam: 100.0% Polyurethane ; Floor mat: 50.0% Thermoplastic Polyurethane, 50.0% Polyester ; Main fabric: 50.0% Thermoplastic Polyurethane, 50.0% Polyester ; Carry bag: 100.0% Polyester

The principle of a self-inflating mattress

A self-inflating mattress consists of an airtight envelope glued to an open cell foam in which the air circulates. When you unfold your mattress, it will regain its shape and thickness (2.5 cm for this MT100 mattress) and fill with air. However, it requires some mouth inflation so you can adjust it to the pressure level suitable for you. Self-inflation is more or less noticeable depending on the thickness of the mattress.

Easy inflation/deflation

When using your mattress for the first time, unroll it, open the valve for 24 hours on a flat surface, then inflate it and leave it for 24 hours, valve closed, under pressure. Then you can store it away again. While trekking, take out and unroll your mattress as soon as you set up camp, valve open to facilitate pre-inflation. A self-inflating mattress inflates to about 60 to 70% on its own. You will need to blow up the rest yourself, so you can adjust the pressure to your desired comfort level.

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 two 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) onlyR-value from 2 to 3: 2 or 3-season (spring-summer-autumn)R-value from 3 to 4: 4-seasonR-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.

How to repair a leaky mattress

An inflatable mattress is not puncture-proof, but it can be repaired!When using it, take every care when installing and handling it. In the event of a problem, we recommend using self-adhesive repair patches (ref: 8557113).

Product testing

All our mattresses undergo mechanical performance and resistance tests to guarantee you the best night's sleep and recovery (thermal and abrasion resistance, etc.). We also carry out several field tests in real-life conditions.

Storage instructions

To ensure your product's resistance and reliability, store it flat, valve open, in a dry, temperate place.




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