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Trek 500, 41° Hiking Sleeping Bag

Sale price: $40.00 Regular price: $59.99

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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Sale price: $40.00 Regular price: $59.99

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Final Sale: No returns or exchanges

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8556633

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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663 Reviews
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Trek 500, 41° Hiking Sleeping Bag
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Sleeping bag

Used it in late summer and was perfect. Fits easily in my bike bag

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Sleeping bag.

The sleeping bag is a good bag but not perfect. I'm happy with that anyway ☺️ Thank you 😊

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nice and cosy

as above

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Great sleeping bag for winter in HK

Purchased for my wife to replace a 15 degree bag and this is way warmer and packs down to a smaller footprint as well. Good quality materials and kept her warm to below 8 degrees without feeling stuffy or claustrophobic. I will be getting another one for myself and will test the ability to zip together.

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Hi Tim,

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

We sincerely appreciate your insight! It's also our pleasure to ensure you have the best experience with our products! 

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

Icy Chan

Decathlon Hong Kong Hiking & Trekking Team

Sleeping bag

Very comfortable and warm

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It's my favourite sleeping bag now. It's so comfortable that I feel like abandoning my bed and just sleeping in the bag permanently.


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Little costly but nice product

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Super product

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Top Quality Material with good Price! Recomanded!

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Width of the product is very less

Hi Manish

Thanks a lot for investing your time in reviewing our product. We are sorry that we were unable to provide you with your expectation. We do have the availability of two different sizes, that are L-large and Xl-extra large. If the product is not used, you can exchange it for a bigger size from the nearest store which has the available stock. You can even exchange the product to get back a full money refund if the products are not used to help you to purchase a bigger size.

Feel free to write back to me with any concerns or issues, I will be available to help you with you r concerns.


It wont keep you warm. Around 8degree celcius i was shivering specially from lower body side. Not worth money. High cost still wont help you

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Hi Agrima

We appreciate the review that has been submitted by you detailing your experience and we are sorry that the product didn't work according to your need or expectation.

If the product has not been helpful to you, we can look into an alternative resolution that supports your needs. (Kindly send me the date of purchase and store from which it was bought)

But FYI- All our products are tested by a group of professional trekkers and are reviewed for temperature and other factors. with respect to the user experience and we recommend products for other similar users. EOD, level of adaptation, and levels of tolerance to cold or warm climates differ from one person to other.

I believe this is one of the instances. Kindly write back to me so that we can look into it in detail and provide a better resolution.

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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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.

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