Made for
This very compact, lightweight bag has a wide temperature range of use. Sleep comfortably from 0° to 5°C thanks to these 2 3/4 zips with double slider to manage the temperature: tailored ventilation.

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Optimum temperatureComfort temperature: 0°C, limit temperature: -5°C. Synthetic wadding.
Easy transportSize L: weight 1.67kg. Volume 15.2 litres. Compression bag.
Sleeping qualityVery comfortable mummy shape. 2 x 3/4 zips with a double slider for ventilation.
Eco-designPES wadding made from 70% recycled fibres 100% of the grey fabric is biton.
CompatibilityCan be twinned with other models from the Forclaz Trek 500 range.
Water repellentWater-repellent fabric to optimise the thermal performance of your sleeping bag.
Warranty5 Years
Technical Information

Usage 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 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! 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 (woollen 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 maximise the heat and hygiene inside your sleeping bag.
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. Width at the shoulders 72 cm, height at the feet 34 cm in size L. 64/30 in S, 68/32 in M, 76/36 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 1.45 g, user up to 1.59m tall. Bag dimensions: L 42 cm Ø 19.5 cm. Volume 12.5 L. Size M 1.55 g, user from 1.60 and 1.69m tall. Bag dim.: L 42 cm Ø 20.5 cm. Volume 13.9 L. Size L 1.67 g, user from 1.70 to 1.84m tall. Bag dim.: L 42 cm Ø 21.5 cm. Volume 15.2 L. Size XL: 1.79g, user from 1.85 to 2m tall. Bag dim.: L 42 cm Ø 22.5 cm. Volume 16,7 L. Volume & dimensions may vary according to the compression applied to the product.
Size and thermal insulation:
The weight, volumes & 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 optimise 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 zips 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 one in every two yarns. This dyed yarn is also made from a bulk dyeing process which incorporates the colour pigments from the yarn manufacturing phase onwards.
Eco-design (continued)
Polyester wadding made of 70% recycled polyester fibres, 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.
Information / Concept / Technology
Padding : 100.0% Polyester Main fabric : 100.0% Polyester Carry bag : 100.0% Polyester Lining : 100.0% Polyester

Product test
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.

Stockage tips
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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