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Forclaz Trek 500, 59° Hiking Sleeping Bag

Sale price: $30.00 Regular price: $44.99

This very compact, lightweight bag has a wide temperature range of use. Sleep soundly from 59°F to 77°F (15° to 25°C) w/ these 2 3/4 zippers w/ double slider to manage the temp: tailored ventilation.

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Sale price: $30.00 Regular price: $44.99

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Model: 8618865

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Product Features

Forclaz Trek 500, 59° Hiking Sleeping Bag | Our designers, who are all backpacking enthusiasts, designed this sleeping bag to sleep comfortably at temperatures of 59°F/15°C or above.

This very compact, lightweight bag has a wide temperature range of use. Sleep soundly from 59°F to 77°F (15° to 25°C) w/ these 2 3/4 zippers w/ double slider to manage the temp: tailored ventilation.

A photo of the Forclaz Trek 500, 59° Hiking Sleeping Bag in use

Optimal temperature

Comfort temperature 59°F/15°C, limit temperature 50°F/10°C. Synthetic fill.

Easy to transport

Size L: weight 1.5 lbs. 4.5 liter volume. Compression bag.

Sleeping comfort

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


We dye every other thread to reduce water consumption


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 Customer Reviews

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Forclaz Trek 500, 59° Hiking Sleeping Bag
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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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Good product quality

Good product quality

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Hi Ivan,

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 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!


Hiking and Trekking team


Compact Keeps you warm Fairly comfortable

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Cold sweeps in from the floor even after using 2 separate matts

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Very nice

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The cold air was penetrating from the zipper, something can be thought of to stop that

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The folks at Decathlon led me on to believe that 'L' was a correct size for me. As I tested this in my backyard, i found it to be a size smaller for a 6'2" person; my feet didn't fit. When I came to know XL is available as a size I took it to exchange it for a larger size within 5 days but Decathlon staff wasn't cooperative at all. Disappointed to have received such treatment after having made almost over 30 purchases. Would request buyer to be vigilant before trusting the judgement of some of the staff.

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Thank you for taking the time to give your valuable review. We are sorry for the issue you had to face. Please write back to me with the issue you faced during the exchange of size so that we can provide you with the best possible solution.


Product Trainer and Passionate Backpacker


Kept me away from the cold. Used for Harihar Trek as well as night camping at Tungarli lake. Nothing else is required when this sleeping bag is with you. Also, it is lightweight and compact-can be put inside your trekking sack. Worth buying for Sahyadri treks.

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Excellent Product!

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Not so much spacious and warm.

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Thank you for taking the time to give your valuable review. We are sorry that you were not satisfied with the product. Please visit your nearest Decathlon store to get the product physically checked so that we can provide you with the best possible solution.


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

Use temperature

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.

What you need to know about temperature

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. Shoulder width 27.6", height at feet 12.6" in size L, 24.4"/11" in S, 26"/11.8" in M, 29.1"/13.4" in XL Ergonomic hood and drawstring 2 double-slider side zippers so that it can be opened at the sides. You can therefore manage the entry of cool air and mechanically ventilate your bag

Weight and dimensions

Size S 1.3 lbs, user up to 5'3" Bag dimensions: L 10.6" Ø 4.9". 3.3 liter volume. Size M 1.4 lbs, users from 5'3" to 5'7" tall. Bag dim.: L 10.6" Ø 5'3". 3.9 liter volume. Size L 1.5 lbs, user from 5'7" to 6' tall. Bag dim.: L 10.6" Ø 5.7". 4.5 liter volume. Size XL 1.6 lbs, user 6'1" to 6'7". Bag dim.: L 10.6" Ø 6.1". 5.1 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 this impact on the environment, we chose to use a dyeing process called "bi-ton," which involves dyeing 1 in every 2 yarns. This dyed yarn is also made from a bulk dyeing process that incorporates the color pigments from the yarn manufacturing phase onward. This process reduces the CO2 emissions of this tent by 20% 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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Size Guide Visual