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Trekking Sleeping Bag MT500 10°C - Polyester

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Sale price: 23.000 KD

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Our designers, who are all outdoor enthusiasts, designed this sleeping bag to sleep comfortably at temperatures of 10°C or above.

This very compact, lightweight bag has a wide temperature range of use. Sleep comfortably from 10° to 20°C thanks to two 3/4 zips with a double slider to manage the temperature: tailored ventilation.

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Sale price: 23.000 KD

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Product Features

A photo of the Trekking Sleeping Bag MT500 10°C - Polyester in use

Optimum temperature

Comfort temperature 10°C, limit temperature 5°C. Synthetic padding

Easy transport

For size L. Weight: 970g. Volume: 7.9 litres. Stuff Bag

Sleeping quality

Very comfortable mummy shape. 2 x 3/4 zips with a two-way cursor for ventilation


Can be twinned with other models from the Forclaz MT500 range

Water repellent

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


Grey fabrics: one out of every two threads dyed to lower the environmental impact

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Product Reviews

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337 reviews

Trekking Sleeping Bag MT500 10°C - Polyester
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Very good, could be better......

I start by stating that I am 6'1" tall, and 48" chest, and was having trouble finding a sleeping bat to fit me. Having tried others, I gave this one a chance, (XXL) being a trusted Decathlon buyer, (although sizing can be an issue). I was pleasantly surprised by its length, and would have given it a 5 star rating if there had been a little more chest room, that said, it was loads better than others. I immedietly got out my sleeping mat, and got into it in our freezing cold conservatory, (Icy conditions outside, with the windows open!) to give it a test. I stayed there for over an hour, as warm as toast! I intend to use this bag over spring, summer, autumn, in my tent, and see no issues with this bag.

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Good product

Functions as described and as expected

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Sleeping bag

Very comfortable will keep you warm at night

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Wonderful product

Reasonably priced , great quality product.

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Not warm enough

The rating of 10 I was told meant you could technically sleep without clothes inside and be comfortable in 10deg. I put this to the test and it is not true. I had 3 layers of clothes on and the sleeping bag is like paper. So thin and doesn’t keep you warm at all. My son was very comfortable and warm in his $20 Aldi sleeping bag though.

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Poor Quality Zippers

The right side zipper splits at the slightest bit of movement resulting in me loosing any warmth from the bag. I have had great experiences with decathlons other products but I think it would be better to spend a little bit more on a more reputable brand. Gave two stars because it comes with its own compression bag and packs down pretty small.



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Hi Patrick,

Thank you for supporting Decathlon Hong Kong and your feedback on your experience with our product!

We sincerely appreciate your insight! Thank you for your feedback and we will pass it to the product design department for reference, in order to build better offers in the future!

We can't wait to offer you more and better products in order to delight your sport experiences! 

If you have any more questions, comments, please feel welcome to reach back out as we would be more than happy to share and assist. Hope to see you around soon!

Stay healthy!


Hiking and Trekking team

Trekking Sleeping Bag MT500 10°C - FORCLAZ

This sleeping bad is extremely compact and small in size which makes transportation very easy. For this I give it 10 stars! It is meant for Temperatures upto 10 degrees C. I yet have to test it out but I am certain I will not be disappointed.

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Worth the money - One time investment

I used for Agasthiyar/ Podhigai Malai trek - 2nights & 3days...after the 1st day of trek, next day morning asked my co-trekkers how you all slept last night. They said they had a broken sleep due to cold weather & chill wind. But i did not know anything during my sleep about the temperature & had a comfortable sleep. If your size is L means go pick XL size sleeping bag for comfortable sleep. Thanks

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Super items

Super quality

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Not warm enough

Not warm enough even in normal cold conditions

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Thank you for your valuable review. We are sorry that you were not satisfied with the product. However, from your review, the issue is not clear. Please write back to me with some details of use and temperatures so that we can provide you the best possible solution.


Product Trainer and Passionate Backpacker

nice sleeping bag


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nyc products..

sleeping bag osm .....bag size small i m happy dis iteam. ......great job

Trekking bag

It absolutely fit 6ft guy like me

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Spacious, warm, compact.

Love it

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Additional Product informations



  • 100% Polyester

Main fabric

  • 100% Polyester

Carry bag

  • 100% Polyester


  • 100% 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.

What you need to know about temperatures

A sleeping bag does not produce heat, but retains the heat produced by the body. If you are tired and cold and you slip inside a cold, damp sleeping bag, it is very likely that you will feel cold no matter how good your sleeping bag is! Your thermal comfort will therefore depend not only on climatic conditions (humidity, wind, etc.) but also on your sensitivity to cold (fatigue, etc.), your equipment (insulating mattress, etc.) and your clothing (naked, underwear, etc.)

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.


A generous mummy shape that is wide at the shoulders and narrow at the feet to optimise thermal insulation (no heat loss) and make the product more compact, while maintaining some freedom of movement.Shoulder width 70 cm, height at feet 32 cm in size L, 62/28 in S, 66/30 in M, 74/34 in XL

Weight and dimensions

Size S: 790 g, user up to 1.59m tall. Bag dimensions: L 33 cm Ø 15.5 cm. Volume 6.2 L.Size M: 890 g, user from 1.60 to 1.69m tall. Bag dim.: L 33 cm Ø 16.5 cm. Volume 7.1 L.Size L: 970 g, user from 1.70m to 1.84m tall. Bag dim.: L 33 cm Ø 17.5 cm. Volume 7.9 L.Size XL: 1040 g, user from 1.85m to 2m tall. Bag dim.: L 33 cm Ø 18.5 cm. Volume 8.9 L.Volume & dimensions may vary according to the compression applied to the product.


Ergonomic hood with drawcord.A baffle along the zips prevents heat loss.Double-slider zips for optimal ventilation.The top of the sleeping bag can be opened with the two side zips.

Want to know more about the wadding?

We use 2 overlapping layers of 100% polyester wadding (90% recycled) of 60 g/sqm.It retains its warmth even when wet.


Can be twinned with all the Forclaz MT500 sleeping bag models.Can be twinned with the older models in the 2017 "Ultralight" and 2018 "Light" ranges.

Additional sustainable development information

Textile dyeing requires a lot of water but also produces waste water from the dye baths. To reduce this impact on the environment, for the grey fabrics of the sleeping bags, we dye every other yarn in bulk, thereby reducing our water consumption and pollution.This process can reduce CO2 emissions by 19% compared to traditional dyeing methods.In addition, we use a wadding made from 90% recycled polyester

How to repair your sleeping bag

On a trek, you can snag a sleeping bag, it happens! The good news is that it can be repaired to prevent the tear from getting bigger or the synthetic fibres from escaping.To do this, we recommend that you use self-adhesive repair patches (ref: 8584596).If you don’t feel comfortable doing this yourself then a heat-bonded patching service is available at the workshop of your Decathlon store.


This sleeping bag is guaranteed for a period of 5 years from the date of sale indicated on the receipt. The product covered by the guarantee will be repaired or exchanged free of charge. The warranty covers product defects excluding any resulting from normal wear and tear and those resulting from abnormal use. The product and sales receipt are required for this special 5-year warranty to be valid.

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