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Trek 500 5° Trekking Sleeping Bag

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Trek 500 5° Trekking Sleeping Bag
Our designers, who are all trekking enthusiasts, designed this sleeping bag to sleep comfortably at temperatures above or equal to 5°C.

This extremely compact ¨&light sleeping bag has wide optimal temperature range. Sleep soundly from 5° to 15°C thanks to the 2 3/4 zips with two-way cursor for heat management: ventilation to suit you.

A photo of the Trek 500 5° Trekking Sleeping Bag in use

Optimum temperature

Temperature rating 5°C, temperature limit 0°C. Synthetic padding.

Easy transport

1200g in size L. Volume 11.3 L. Compression bag.

Sleeping quality

Very comfortable mummy shape. 2 x 3/4 zips with a double slider for ventilation.


PES wadding made from 70% recycled fibres100% of the fabric is bi-ton.


Can be twinned with other models in the Forclaz Trek 500 range.

Water repellent

Water-repellent fabric to optimise the thermal performance of your sleeping bag.


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Product Reviews

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5 review(s)
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Good Product

Very good quality sleeping bag material is very good

Worked well in 5 degree

Recently I bought this sleeping bag and used in one trek so far. The temperature was around 5°C and I had a nice sleep in it. I took the xl size and recommend to that if you want to move freely in the sleeping bag. However it may depend on individual preference. Overall satisfied.

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Useless For Low Temp

I have been a keen trekker and have been to various places in north India starting from himachal, uttrakhand and jnk I bought this but it doesn't work as per it's temp reading. Please do not go by it's temp reading and regret later.. you will not be able to sleep at night .


Hello Abhishek

Thank you for taking out time to give your valuable review. We would like to apologize to you for the wrong temperature rating online. The Sleeping bag is rated comfortable at 5 Degrees and not -5 Degree. The issue was due to a technical error. Please feel free to exchange or refund the product at your nearest Decathlon store.


Product Trainer and Passionate Backpacker




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Product information



  • 100% Polyester

Main fabric

  • 100% Polyester

Carry bag

  • 100% Polyester


  • 100% Polyester

Temperature of use:

All our sleeping bags display the comfort and limit temperature ratings, tested by an independent laboratory (AITEX), in accordance with the European standard NF ISO 23537 - 2017.The "comfort temperature" is the lower comfort limit at which a user in relaxed position is in overall thermal balance and is neither hot nor cold (determined for an average woman in normal conditions of use). Choose your sleeping bag according to this criterion.

What are the limit temperatures for usage?

Limit temperature: temperature limit at which the user of the sleeping bag in huddled-up position is generally in thermal equilibrium and is neither cold nor hot (determined for a standard man under normal conditions of use).We recommend using an insulation mattress to optimise your thermal comfort.This sleeping bag is lined with synthetic wadding to ensure its performance even in wet conditions.

However, this is 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! In the night, your thermal comfort will not only depend on the weather conditions (damp, wind, etc) but also your physical fitness, your equipment (mattress, etc), your clothing (wool under-garments, etc).

For greater comfort, before getting into your sleeping bag:

Dress simply (1 layer of clothing is enough). Warm-up your extremities: use hats, gloves, socks, bed warmers, rubbing, etc.A flask filled with hot water can be used as a foot or bed warmer (so long as there's no chance of it opening by accident!)Contract your muscles (70% of the energy consumed is converted into heat) but without making any movement generating a cold airstream. Use a sleeping bag liner to maximise the heat and hygiene inside your sleeping bag.


Wide at the shoulders and tighter at the feet to optimise thermal insulation (no heat loss) and compactness, while maintaining relative freedom of movement.Width at the shoulders 70 cm, height at the feet 32 cm in size L.62/28 in S, 66/30 in M, 74/34 in XL.Ergonomic hood; Drawcord. Two double-slider side zips, lined with a flap (tube) in anti-cold wadding (thermal bridges), side openings. Easy mechanical ventilation.

Weight and dimensions:

Size S 980 g, user up to 1.59m. Bag dimensions: L 40 cm Ø 17 cm. Volume 9.1 L.Size M 1.1 g, user between 1.60m and 1.69m. Cover size: L 40 cm Ø 18 cm. Volume 10.2 L.Size L 1.2 kg, user height 1.70m to 1.84m. Cover size: L 40 cm Ø 19 cm. Volume 11.3 L.Size XL: 1.29kg, user height: between 1.85m and 2m. Cover size: L 40 cm Ø 20 cm. Volume 12.6 L.Volume & dimensions can vary according to the pressure applied to the product.

Size and thermal insulation:

The weight, volumes & sizes can vary slightly due to production tolerances.Try your sleeping bag before buying it to choose the right size for your comfort. The advantage of a sarcophagus-shaped sleeping bag is to optimise the weight/volume and thermal ratio. Indeed, with a bag that fits close to the body, you will have less volume to heat (saving your energy). Conversely, this type of bag can limit your freedom of movement, especially when the zips are closed.

Compatibility (next)

Can be twinned with other sleeping bag models in the Forclaz Trek 500 range.Can be twinned with other models in 2017 "Ultralight" and 2018 "Light" ranges.


Textile dyeing requires a lot of water but also produces waste water from the dye baths. To reduce the impact on the environment, we choose "bi-ton" dyeing, meaning only one out of every two threads are dyed. This dyed yarn is also dyed using mass pigmentation, using colour pigments when the yarn is manufactured.

Eco-design (continued)

Wadding in polyester wadding with 70% polyester recycled polyester, reducing its environmental impact.All these eco-design choices enable the CO2 emissions of this sleeping bag to be reduced by 16% compared to the former model.


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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