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Trek 500, 41° Hiking Sleeping Bag

Sale price: $69.99 Regular price:

This extremely compact & light sleeping bag has wide optimal temperature range.Sleep soundly from 41°to 59°F (5°to 15°C) w/ the 2 3/4 zippers w/2-way slide for heat management:ventilation to suit you.

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Model: 8618867

Product Features

Trek 500, 41° Hiking Sleeping Bag | Our designers, who are all backpacking enthusiasts, designed this sleeping bag to sleep comfortably at temperatures above or equal to 23°F/-5°C.

This extremely compact & light sleeping bag has wide optimal temperature range.Sleep soundly from 41°to 59°F (5°to 15°C) w/ the 2 3/4 zippers w/2-way slide for heat management:ventilation to suit you.

A photo of the Trek 500, 41° Hiking Sleeping Bag in use

Optimal temperature

Temperature rating 41°F/5°C, temperature limit 32°F/0°C. Synthetic fill.

Easy to transport

2.6 lbs in size L. 11.3 liter volume. Compression bag.

Sleeping comfort

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


PES fill made from 70% recycled fibers 100% of the gray fabric is biton.

Water repellent

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

Water Repellent

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

Product Lifestyle Image Gallery

Image Gallery

Trek 500, 41° Hiking Sleeping Bag,dark chocolate truffle 

Trek 500, 41° Hiking Sleeping Bag,dark chocolate truffle 

Trek 500, 41° Hiking Sleeping Bag,dark chocolate truffle

Product Customer Reviews

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Trek 500, 41° Hiking Sleeping Bag
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nice and cosy

as above

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Sleeping bag

Very comfortable and warm

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High quality

Worth its price. Also small in size which is useful during travelling

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Nice product


Its a Good product.. but runner of chain cling by fabric and its so irritating while sleepy..

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good sleeping bag

quality is quite awesome but in 0* it is little cozy and

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Very Good Product

Very good exillent class product

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Very Good Product

Quality is very Good

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Nice protect

Comfortable product

Works as advertised

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Best Sleeping Bag For Daily Use


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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Additional Product Information



  • 100% Polyester cationic

Main fabric

  • 100% Polyester cationic

Carry bag

  • 100% Polyester cationic


  • 100% Polyester cationic

Temperature of use:

All our sleeping bags display the temperature rating and limit temperature, 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 optimize your thermal comfort. This sleeping bag is lined with synthetic insulation 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! During the night, your thermal comfort will therefore depend not only on climatic conditions (humidity, wind, etc.) but also on your physical condition, your equipment (mattress, etc.) and your clothing (wool underwear, 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 maximize the heat and hygiene inside your sleeping bag.


A generous mummy shape that is wide at the shoulders and narrow at the feet to optimize thermal insulation (no heat loss) and make the product more compact, while maintaining some freedom of movement. Width at the shoulders 27.6", height at the feet 12.6" in size L. 24.4"/11" in S, 26"/11.8" in M, 29.1"/13.4" in XL. Ergonomic hood; Drawstring. 2 double-slider side zippers, lined with a flap (tube) in anti-cold fill (thermal bridges), side openings. Easy mechanical ventilation.

Weight and dimensions:

Size S 2.2 lbs, user up to 5'3" Bag dimensions: L 15.7" Ø 6.7". 9.1 liter volume. Size M 2.4 lbs, user from 5'3" to 5'7" tall. Bag dim.: L 15.7" Ø 7.1". 10.2 liter volume. Size L 2.6 lbs, user from 5'7" to 6' tall. Bag dim.: L 15.7" Ø 7.5". 11.3 liter volume. Size XL 2.8 lbs, user from 6'1" to 6'7" tall. Bag dim.: L 15.7" Ø 7.9". 12.6 liter volume. Volume and dimensions may vary according to the compression applied to the product.

Size and thermal insulation:

The weight, volumes, and sizes may vary slightly owing to production tolerances. Try your sleeping bag before buying it to choose the right size for your comfort. The point of a mummy-shaped sleeping bag is to optimize the insulation/weight/volume 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 zippers are closed.

Compatibility (continued)

Can be twinned with all the Forclaz Trek 500 sleeping bag models. Can be twinned with the older models in the 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 1 out of every 2 threads are dyed. This dyed yarn is also dyed using mass pigmentation, using color pigments when the yarn is manufactured.

Eco-design (continued)

Polyester fill made of 70% recycled polyester fibers, thereby reducing its environmental impact. All these eco-design choices lead to a reduction in the CO2 emissions of this sleeping bag of 16% compared to the old 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.



Product testing

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

Storage instructions

You can easily store your bag by stuffing it loosely into its cover, feet section first.To keep it fluffed up & ensure good thermal performance, remove from its cover, extend, store it in a dry place.

Superior quality. Unbeatable prices.

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Size Guide Visual