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Trekking Sleeping Bag MT500 15°C - Polyester

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Sale price: Dhs. 225.00

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Our designers, who are all outdoor enthusiasts, designed this feather sleeping bag to help you sleep comfortably at temperatures above or equal to 15°C.

This very compact, lightweight bag has a wide temperature range of use. Sleep sound from 15° to 25°C thanks to these two 3/4 zips with a double slider to manage the temperature: tailored ventilation.

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Sale price: Dhs. 225.00

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Product Features

A photo of the Trekking Sleeping Bag MT500 15°C - Polyester in use

Optimum temperature

Comfort temperature 15°C, limit temperature 10°C. Synthetic padding

Easy transport

For size LWeight: 680 g. Volume 4.5 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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563 reviews

Trekking Sleeping Bag MT500 15°C - Polyester
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Good for warm weather

The pack-ability of this sleeping bag was the main reason we bought it. I run cold so I usually get a little chilli in the mornings but I wear long-johns now and I am more comfortable. We also love being able to zip together our bags

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Comfortable for Spring nights

Soft and comfy to about 15deg, was a little cold in the middle of the night when it was 11deg but not too bad. Easy to pack it back into the little bundle, very happy!

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Hiking, light

I thought I needed to spend a fortune for a mini, light sleeping bag to carrie for a hike. You don't, this works totally fine. It compresses very well. I bought it with a silk liner in case it gets a little colder at night

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Wow Easy To Carry

My first experience thank you Decathlon

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Bad temperature

Temperature not suitable..

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Hello Rahul

Thank you for taking the time to give your valuable review. We are sorry that you were not satisfied with the product. This sleeping bag is rated comfortable at 15 degrees in a tent. If you faced an issue with the temperature. Please write back to me so that we can provide you the best possible solution.


Product Trainer and Passionate Backpacker

its good sleeping bag

its good sleeping bag but quality is not that great

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It's very comfortable

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Nice Priduct


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Nice Product


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light weight

light weight

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Nice one

Good product

Very useful and less space consuming

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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 ACCORDINGLY

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.)

Tips before getting 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: 590 g, user up to 1.59m tall. Bag dimensions: L 27 cm Ø 12.5 cm. Volume 3.3 L.Size M: 630 g, user from 1.60m to 1.69m tall. Bag dim.: L 27 cm Ø 13.5 cm. Volume 3.9 L.Size L: 680 g, user from 1.70m to 1.84m tall. Bag dim.: L 27 cm Ø 14.5 cm. Volume 4.5 Litres. Size XL: 740 g, user from 1.85m to 2m tall. Bag dim.: L 27 cm Ø 15.5 cm. Volume 5.1 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 1 layer 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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