
Decathlon - MT900 Air Insulator (XL)
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Based on 1 year's data from Feb 25, 2026 How it works
Haha no idea I'm loving the Forclaz MT900 from Decathlon at the moment so for the time being I'll just enjoy cinching that nice and tight and carrying half a kilo less mat around I know Osprey are well rated but around here they're very 'struggling to park your massive SUV in the National Trust car park' so I'm avoiding them!
I have the MT900 Air XL (195x63, R5,4, 675g). I'm quite happy with it.
I’ve had this pad for a couple of years (from when it was forclaz branded). I’d recommend it, it feels warmer than my higher rated sea to summit, packs up reasonably small and isn’t too heavy. I’ve never had any issues with it going down or getting any punctures. Only downside is that none of the default flextail nozzles fit it, so you have to awkwardly hold the closest fitting nozzle against the pad when inflating (or just use the pump sack). They may have changed the nozzles though in this iteration
I have this. Have inflated & used it about 10 times with no punctures. Comfortable. I’m 6ft 2 & about 100kg. It was my first sleeping mat mind you. I’ve used one other that was nowhere near comfortable.
I just got mine, finally. It seems very comfortable and warm and will replace my S2S ultralight which did not work for me.
I have this same one and love it. I am 6ft and about 17 stone, it is really comfortable I can sleep on my side with no bottoming out and it is warm. Like you are suggesting I always put a closed cell foam mat (also decathlon) below it to help mitigate the risk of puncture. To be honest if something happened to it I would replace it with the same one again.
I had the Numo for years its light and packs down but its not warm and its too short for me at 188cm. My mate just got the Whisper, it seems decent and not too noisy for an insulated mat, also a bit short. I've had a decathlon insulated mat for a few trips, seems decent.
Hiker here: if space is a main concern you will want an inflatable mattress (not a foam pad). Read up on R-values. Decathlon make a cheap mat that is small and comfortable, but is not warm at all. Exped makes a mat that bigger but also involves down, and is very warm. There are many options in between. Bagwise consider your ability to keep it dry. Down is better in any way except when wet. Then syntheric is your option.Absolutely do not trust the ratings on a bag. Go at least 10c lower on the comfort rating. You will be hungry, and therefore cold. I love me a Nemo spoonshaped bag, which is ideal for a side sleeper.
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