Trekking Sleeping Bag - MT500 -5C, Black

With its thick wadding and enveloping hood, this sleeping bag will allow you to enjoy comfortable nights even in temperatures around -5°C.

With its mummy shape, it is relatively light and compact to meet the needs of trekkers. The 3/4 length zip makes it easy to open.

Ergonomic hood with drawcord.
Double collar to prevent heat from escaping.
A baffle along the zip prevents heat loss.
Double-slider zip for optimal ventilation.
Inside pocket

We display the comfort temperatures that are determined by an independent lab (AITEX) on all our sleeping bags, in accordance with the international standard ISO 23537-1: 2022.
Comfort temperature is the minimum temperature at which an average person (female, 25 years old, 60 kg, 1.60 m) feels comfortable and not cold when they are in a relaxed position.

Choose your sleeping bag accordingly.

The limit temperature rating is the minimum temperature at which an average person (male, 25 years old, 70 kg, 1.73 m) is able to sleep in a curled up position without feeling significantly cold.

For your information, the extreme temperature is the minimum temperature at which a person can survive (risk of hypothermia) for six hours. This is a safety measure, not a comfort measure.

The protocol for measuring the thermal performance of a sleeping bag is to use a mattress with a thermal resistance corresponding to an R-value of 4.8.
If you use a less insulating mattress, the thermal performance of your sleeping bag will be reduced.

We therefore recommend that you use an insulating mattress for better thermal comfort.

Size S: not available.
Size M (users between 1.60 m and 1.69 m): 1500 g.Folded size: L 41 cm diam. 22 cm.Volume 15 L.
Size L (users between 1.70 m and 1.84 m): 1650 g.Folded size: L 41 cm diam. 23 cm.Volume 16 L.
Size XL (users between 1.85 m and 2 m) : 1810 g.Folded size: L 41 cm diam. 24 cm.Volume 18 L.
Weight, volume and dimensions can vary by +/ -5% due to manufacturing tolerances.

Simply dress in light clothing (one layer, ideally Merino wool, is sufficient).
Warm up your extremities with a hat, gloves, socks and hand/foot warmers if necessary.
Use a sleeping bag liner to optimise warmth and avoid washing your sleeping bag too often. Choose a mattress with good insulation (R-value > 3).
And here's a little tip: contract your muscles (70% of the energy consumed is converted into heat) but don't make any movements that cause cold!

When trekking, you may well get a tear in your sleeping bag! The good news is that it can be repaired to prevent the tear from getting bigger or the synthetic fibres from escaping.
We recommend using self-adhesive repair patches (ref: 8584596).

If you don't feel comfortable doing this yourself, we offer a repair service in our Decathlon stores and one of our specialists can apply a heat-bonded patch for you.

We use 3 layers of overlapping wadding:
- two 115 gr/m2, 100% polyester.
- and one 150 gr/m2, 100% polyester.

The wadding is made from silicone-coated spiral fibres that make it highly compressible and highly durable.
Despite its low thickness, it has high insulation properties thanks to the air trapped inside, and remains lightweight.

It retains its warmth even when wet.

On the outside, it is made of 100% polyamide, 38 g/m², 20 denier. This fabric can withstand up to 20,000 abrasion cycles.

Durability is calculated using the Martindale test (Standard 12 947-2). This test involves rubbing the bag material against another material to assess the product's abrasion resistance.

The inner lining is made from a 100% polyamide fabric in 20 denier, weighing 35 g/m2.

This product does not contain any intentionally-added PFAS treatments.