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Trek 500 XL Self-Inflating Mattress

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Sale price: $49.99 Regular price:

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Model: 8352448

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Product Features

A photo of the Trek 500 XL Self-Inflating Mattress in use

Trek 500 XL Self-Inflating Mattress is designed for insulation from the ground for sleeping when backpacking or bivouacking.

2.2 lbs. 76.8" x 23.6" x 1". The extra-large self-inflating mattress, comfortable and compact.

Easy to transport

Weighs 2.2 lbs. Volume: 9 liters. Ø 7.3" x 15.7". Carry cover.

Sleeping comfort

Dimensions 76.8" x 23.6" x 1". Thermal insulation. Extra-large self-inflating.


Ideal for temperate environments (>41°F). R-Value 2.3

Easy assembly/dismantling

Self-inflating. Efficient and anti-return bi-valve. Adjustable comfort.


Non-slip silicone patches. Reduces slipping of the sleeping bag.

Product Lifestyle Image Gallery

Image Gallery

Trek 500 XL Self-Inflating Mattress,dark petrol blue 

Trek 500 XL Self-Inflating Mattress,dark petrol blue 

Trek 500 XL Self-Inflating Mattress,dark petrol blue 

Trek 500 XL Self-Inflating Mattress,dark petrol blue

Product Customer Reviews

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Trek 500 XL Self-Inflating Mattress,dark petrol blue
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Worth it! Durable!

Bought ours October or Nov 2017 and still works fine. Bought this for an out of town trip since we need to save space in our luggage. It was worth it and we have been using it ever since. Downside to this product is that the "self inlating" part take a long time we needed to pump/blow in air a few times to get it inflated which didn't take much effort anyway, the cap/opening sometimes leak air you just have to secure it everytime. We lost our drawstring pouch/bag since a few months back but overall.. It served its purpose and I think its worth the price and worth purchasing

Never Again

I bought one of these hopeful of a good nights sleep, unfortunately it wouldn't stay inflated, when I got home I filled a bath with water to find out where it was leaking. To my surprise it was more like where it wasn't leaking, all the corners leaked in numerous places top and bottom where the seam meets the inflated area, 33 holes in total. When I tried to return it to the store I bought it from I was told by the Customer Asst. that it wasn't for water use and as I had exposed it to water I couldn't get a refund or replacement. When I asked to speak to the manager the Customer Asst. called the security staff over and had me removed from the shop. This is the worst customer experience I have ever had! My recommendation is to not buy from this company ever!

Amazingly comfortable

Unlike the regular thick air bed, this thin layer of mattress requires min effort of inflating/deflating which makes it so convenient to carry around. It's perfect for picnic, overnight camping or airport layover. Surprisingly the non slippery texture is also very comfortable to lie on. So far i have only tried it on flat surface, not sure if it is suitable to be used on rough and uneven terrain.

Esterilla autoinflable

Simplemente fantástica. Casi una cama.

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ESTERILLA trekking Trek 500

Comodidad, ligereza y sin perder una gota de aire durante la noche. La esterilla no es autohinchable, hay que hincharla con la boca.

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Cumple, pero la mía pierde presión

Me parece bastante cómoda, es ligera de peso y el volumen en vacío podría mejorarse. La mía en cuestión la he usado 3 noches en dos salidas distintas. En el primer uso me pareció que perdió cierta presión, pero nada preocupante, pero en una segunda salida he amanecido durmiendo casi sobre el suelo y me he dado cuenta de que pierde aire por la válvula. Pasaré por tienda a ver qué me dicen.


Muy útil y confortable

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Lo acabo de comprar y ya se desinfla

Lo compré el viernes para ir de camping este fin de semana y la primera noche al principio todo bien pero me desperté en mitad de la noche en el suelo con la colchoneta sin aire como si estuviera la válvula abierta pero no era el caso. No doy encontrado la fuga pero por 35€ esperaba mucha más calidad. Dinero a la basura.

Hola Andrea

En primer lugar, agradecerle mucho su comentario ya que nos hace mejorar día a día. Le informamos que todos nuestros productos, tanto los propios como las marcas externas pasan pon el departamento de calidad, pasando unas respectivas pruebas, antes de salir a su venta.

Según nos comenta, si no ha cerrado correctamente las dos válvulas, puede deberse a una unidad defectuosa. Para poder ofrecerle una solución le invito que vaya a su tienda más cercana, con el artículo y su ticket de compra o tarjeta cliente, para exponer su disgusto con el producto y que le valoren su caso.

Transmitiremos su comentario a la marca Forclaz para próximos desarrollos.

Monitor País de Trekking - Forclaz
Permet de ne pas…

Permet de ne pas ressentir les denivlees du sol et donc de rendre le couchage plus confortable

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facile d'emploi. Ne prend…

facile d'emploi. Ne prend pas de place dans une sacoche de vélo (VTC)

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Messieurs, Ce produit ne peut…

Messieurs, Ce produit ne peut être utilisés seul ,sûrement avec sous matelas gonflable et à corde ,J ai utilisé ce produit 1fois après Une nuit épouvantable. Il finira en déchetterie

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Bonjour monsieur,

Je vous remercie pour votre commentaire sur le matelas de trekking Trek 500 autogonflant XL bleu, et je suis désolé pour les désagréments occasionnés.

Je vous invite à vous présenter auprès de votre magasin Décathlon habituel qui, après diagnostic, vous proposera une solution adaptée. Il serait dommage qu'un produit quasi neuf comme votre matelas soit jeté et détruit alors qu'il est parfaitement fonctionnel.

Restant à votre écoute, je vous souhaite une bonne journée, cordialement,

Nicolas Chef de Produit|Materiel Trekking/bivouac Forclaz

Le moins Très peu...

Le moins Très peu confortable Le plus très léger prend pas de place

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Bonjour madame,

Je vous remercie pour votre commentaire sur le matelas de trekking Trek 500 autogonflant XL bleu.

Pouvez-vous me préciser les éléments qui vous ont déplu en terme de confort ? S'agit-il de confort thermique ? De l'épaisseur ? De la taille ? Fort de ces éléments, je pourrais vous apporter une réponse.

Vous pouvez également vous présenter auprès de votre magasin Décathlon habituel qui, après diagnostic, vous proposera une solution qui vous satisfasse.

Restant à votre écoute, cordialement,

Nicolas Chef de Produit|Materiel Trekking/bivouac Forclaz

Prévu plus pour isoler...

Prévu plus pour isoler le corps du froid avant de penser au confort mais celui-ci est au rendez-vous c'est donc un.produit gagnant. Superbe

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Super aucun problème.Je recommande...

Super aucun problème. Je recommande ce matelas

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tres confortable malgré la...

tres confortable malgré la faible épaisseur. pratique à mettre en place mais par contre seul bémol il prend bcp de place dans le sac même plié au max.

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Additional Product Information



  • 100% Polyurethane

Tent Footprint

  • 50% Polyester cationic
  • 50% Thermoplastic polyurethane

Main fabric

  • 50% Thermoplastic polyurethane
  • 50% Polyester cationic

Carry bag

  • 100% Polyester cationic

How a self-inflating mattress inflate

A self-inflating mattress includes a waterproof casing bonded to open-cell foam in which air can circulate. When you unfold your mattress, it will return to its shape and thickness (1" for the trek 500 mattress) and fill with air. You must however finish inflating it with your mouth, which also enables you to adjust the pressure for your comfort. Self-inflation is more or less visible depending on the thickness of the mattress.

Easy to set up and put away

When using your mattress for the first time, unroll it, leave the valve open for 24 hours on a flat surface then inflate it and leave it for 24 hours with the valve closed, pressurized. You can put it away again. When bivouacking, take out and unroll your mattress as soon as you set up camp, valve open to facilitate pre-inflation. A self-inflating mattress inflates itself to approximately 60 to 70%. The rest of the inflation should be done by mouth to adjust the pressure to your comfort.

Thermal properties and warmth

Thermal insulation thanks to the foam. The R-Value expresses the performance and thermal resistance of the mattress. The higher the R-Value, the more the mattress insulates you from the cold ground. R-Value 2.3 (measured in an external EMPA laboratory) An R-Value of 5.9 corresponds to a minimum use temperature of about -11°F. 0.7 corresponds to +52°F The R-Value is not a standard; each manufacturer can use their own criteria. A standard process is currently being developed.

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. Postural comfort is a very personal thing. You can adjust the pressure of your mattress.

Sleeping comfort, support

To prevent your sleeping bag from slipping on your mattress, the silicone patches must be placed in contact with the sleeping bag.



Product testing

All our mattresses undergo mechanical tests that test the performance and resistance of the mattress to guarantee better sleep and recuperation (resistance to abrasion, resistance to perforation, etc). We also carry out many tests in the field, in real conditions.

Storage instructions

For improved durability and reliability of your product, store it stretched out flat, valve open, in a dry and temperate place.

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.

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Size Guide Visual