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Trekking Sleeping Bag MT900 0 degrees Celcius Down

Sale price: $100.00 Regular price: $199.00

This sleeping bag is warm and light thanks to the loft (800 CUIN) of the down used, and is also very compressible. Mummy shape and adjustable hood with good coverage and a drawstring.

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Sale price: $100.00 Regular price: $199.00

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Model: 8575975

Product Videos

Product Features

Trekking Sleeping Bag MT900 0 degrees Celcius Down | With this RDS certified 3-season down and feather sleeping bag, you can sleep comfortably at temperatures down to 0°C.

This sleeping bag is warm and light thanks to the loft (800 CUIN) of the down used, and is also very compressible. Mummy shape and adjustable hood with good coverage and a drawstring.

A photo of the Trekking Sleeping Bag MT900 0 degrees Celcius Down in use

Optimal temperature

comfort temperature 0°C, limit temperature -5°C. ISO 23537-1 standard

Easy to transport

For size L. Weight: 950 g. Volume: 7,8 litres.Stuff Bag

Sleeping comfort

Mummy shape, anatomical hood. 1 long zip on the left with a double slider

Water repellent

Outer surface of the fabric is treated so that water runs off the surface


RDS ethical down with a fill power of 800 CUIN. 90% down/10% feathers


non-twinnable sleeping bag

Product Lifestyle Image Gallery

Image Gallery

Trekking Sleeping Bag MT900 0 degrees Celcius Down,granite 

Trekking Sleeping Bag MT900 0 degrees Celcius Down,granite 

Trekking Sleeping Bag MT900 0 degrees Celcius Down,granite 

Trekking Sleeping Bag MT900 0 degrees Celcius Down,granite 

Trekking Sleeping Bag MT900 0 degrees Celcius Down,granite

Questions & Answers

Product Customer Reviews

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395 Reviews
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Trekking Sleeping Bag MT900 0 degrees Celcius Down,granite
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So warm , very good quality, we camp a lot and this sleeping bag is the best that i never had. Lightweight and packs small, cozy and comfortable.

Sleeping bag cac

The bag seems to be well made with good quality material. I still have to try it when I go camping in the fall. But I have one big issue with the compression sac, why is it so dam small, it’s a real struggle to squeeze the bag in, rolled or stuffed. You could have made it 2-3 inches wider for easy stuffing . I will definitely have to buy a replacement compression sac from Sea to Summit to make my life easier. I would recommend the sleeping bag but I am disappointed with the poor thought put into designing of the compression sac.

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Hello JIm,

Thank you for taking the time to leave a review. We are sorry that the product did not fit you perfectly. 

Although we try to accommodate our design and size guides, our customers always advise taking one size up compared to your regular size. 

Do not hesitate to ask our advisors for advice if you have any doubt about the product you need. Please be assured that we are doing our best to adapt our offer and make the size selection easier for all our customers.

Thanks & Regards,

Decathlon Brampton Team

Bad product

I bought it 2 years ago and since that time I was using that bag on few motorcycle trips. This Bag is not worth the money that you need to pay for it. First. Bag is loosing a lot of down every time when I use it. Second. Down for sure is NOT 800cuin like you can find in the description. I think is more like 600cuin. Third. This bag is COLD! no chance to sleep comfortable wearing merino thermal underwear in temperature close to 0c I am so unhappy with that purchase!

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Great 3 season sleeping bag

Great 3 season sleeping bag. I am 5’10”, Uk size L and bought the L bag. Feels snug without being restrictive. Have used throughout the summer unzipped and is warm enough for the cooler seasons (down to low single figures). Material feels soft on the skin and the down lifts up nicely. Comes with a compression sack and a mesh storage bag. Excellent product for the money!

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Lightweight and really really warm!

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The temperature rating is a fantasy

I had experience using this bag in temperatures close to 0C in the UK (May) alone in a 2 man tent. It comprehensively failed to provide anything like adequate warmth in these conditions. It packs up really small and the provision of both compression sack and a large storage bag work well. The loft is impressive when you get it out of the bag. The main problem is that it has nothing like sufficient filling to provide adequate insulation at the claimed 0C. Using this in 2 season conditions (certainly no less than 8C) it would probably be fine (but strikes me as expensive for what it is). Anyone considering using this in anything like 'survival' conditions would be well advised to give it a tame test in a campsite first - I would not trust it and will be returning mine.


Lightweight and packs small. I have used the bag down to -2 degrees and it was very snug. It is also not too how in warmer times. I used it in September on a wild camping cycling trip (on my Btwin Mountain bike) The nights were quite warm but I was fine.

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Top quality Down filled sleeping bag.Comes with a separate storage airing bag for the Down to plump up whilst in storage.Smart stuff sacvfor when you are travelling.

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Brilliant sleeping bag!

I’ve used this sleeping bag for wild camps and camping. It’s so light but cosy and comfortable to give a good nights sleep. Easy to pack away he comes with a bag to store away when not in use. A great product for the price and with a sleeping bag liner could be used in much colder seasons.


Excellent product

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good quality and comfortable

I like the product. Plus its very compact.

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Спален чувал Trek 900

Да, използвах го на 2⁰ С в планината при доста влажни условия и мога само суперлативи да споделя. Топъл, лек и компактен :)

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Благодарим Ви за отделеното време и оценката, която сте дали за нашия продукт.

Качественото обслужване, доволните клиенти и предоставянето на възможността всички да спортуват е наша главна цел.

Спортни поздрави,

Екипът на Декатлон Българи!

Чудесен продукт

Лек, удобен, много комфортен. С термобельо при външна температура от 0 градуса не се чувства студ.

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Здравейте, Борис,

Благодарим Ви за отделеното време и оценката, която сте дали за нашия продукт. Качественото обслужване, доволните клиенти и предоставянето на възможността всички да спортуват е наша главна цел.

Спортни поздрави,

Екипът на Декатлон България!

Na péřák docela dobrý

Docela solidní spacák. Na naše podnebné podmínky (3 sezónní) je naprosto dostačující. Kolem 5 st. C začíná být zima. Velice skladný. Vyzkoušeno na treku v Kyrgyzstánu.

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Additional Product Information


Filling: 90.0% Grey Duck Down, 10.0% Grey Duck Feather ; Lining: 100.0% Polyamide ; Main fabric: 100.0% Polyamide ; Carry bag: 85.0% Polyester, 15.0% Polyurethane ; Bag cover: 100.0% Polyester

What is the temperature rating?

We display on all our sleeping bags the comfort temperatures tested by an independent laboratory (AITEX) according to European standard ISO 23537-1 of 21/01/2017. The comfort temperature rating is the lower limit at which the user in relaxed posture is generally in thermal equilibrium and feels neither too cold nor too hot (for a standard woman in normal conditions of use). Choose your sleeping bag according to this criterion.

What is the temperature rating (lower limit at which you feel comfortable)?

The comfort limit temperature is the temperature limit at which a person curled up in the sleeping bag is in general thermal equilibrium, neither too cold nor too hot (determined for a man in normal conditions of use).We recommend using an insulation mattress to optimise your thermal comfort.

An important clarification concerning the iso 23537-1 standard

In the context of this standard, the measurement protocol of a sleeping bag’s thermal protection uses a mattress with thermal resistance equal to an R-value of 4.8.This means that by using a less insulating mattress, the thermal performance of your sleeping bag will be lower.We therefore recommend you use an insulating mattress to optimise your thermal comfort.

Some advice to consider before you get into your bag

Dress simply (1 layer of clothing is enough). Warm-up your extremities: hats, gloves, socks, hand/feet warmers, rubdowns, etc. A flask of hot water can be used as a hot water bottle (as long as there's no chance of it accidentally opening!) Contract your muscles (70% of the energy consumed is converted into heat) but do it without moving as this could create a draught. Use a bag liner to optimise warmth and avoid washing your sleeping bag too frequently.


The mummy shape optimises thermal insulation (no loss of heat because there is not much air flow or draughts) and saves space, which means that your movements are restricted.Width at the shoulders 72 cm, height at the feet 26 cm in size L.

Weight and dimensions

Size S: 750 g, user up to 1.60m tall. Bag dimensions: Ø 15 x 34 cm. Volume 6.1 Litres. 380 g of down/feathers.Size M: 850 g, user from 1.60m to 1.70m tall. Bag dimensions: Ø 16 x 34 cm. Volume 6.9 Litres. 440 g of down/feathers.Size L: 950 g, user between 1.7 m and 1.85 m. Bag dimensions: Ø 17 x 34 cm. Volume 7.8 Litres. 500 g of down/feathers.Size XL: 1050 g, user from 1.85m to 2m tall. Bag dimensions: Ø 18 x 34 cm. Volume 8.7 Litres. 560 g of down/feathers.


Anatomical hood with good coverage and drawstring adjustment.A baffle along the zip prevents heat loss.Double-slider zips for optimal ventilation.Brick baffle construction to reduce thermal bridges.

The advantages of a duck down and feather filling

The filling power of down has 3 advantages for mountain sports:- Thermal insulation thanks to the air trapped in the down and feathers- Ultra low weight: down is lighter than synthetic wadding while offering the same degree of warmth. This saves even more weight in your backpack- Ultra-compressible

How to measure the fill power of a down and feather wadding?

The fill power is a measure of the down's thermal insulation capacity and its potential to ”trap” air. It is expressed in CUIN (cubic inches).So, down with a higher fill power (higher CUIN number) will occupy more space, trap more air and provide greater thermal insulation.For this sleeping bag with its 90% down / 10% feathers filling, the fill power is guaranteed to be 800 CUIN or more (international IDFB standard).

Storage instructions

To maintain its fill power, which is necessary for its insulation properties, store your sleeping bag by stuffing it in the mesh bag provided, feet first. Can be stored flat.



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