Product Colors and Sizes
- Black Friday product
- New Deal product
- Cyber Monday product
- Clearance product
- Deal product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
- Black Friday product
- New Deal product
- Cyber Monday product
- Clearance product
- Deal product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
US Backpacking Sleeping Bag MT500 23°F - Polyester
This mummy bag is filled with our thickest wadding: guaranteed comfort! You'll love its 2 side zips with a double slider for optimal ventilation. It can also be twinned.
Free shipping over $49
Free returns
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features
Optimal temperature
Comfort temperature rating -5°C, limit temperature -11°C. Synthetic padding
Easy to transport
For size L. Weight: 2100g. Volume : 19.1 L. Stuff Bag
Sleeping comfort
Comfortable mummy shape. 2 x 3/4 zips with a double slider for ventilation.
Compatibility
Can be twinned with other models from the Forclaz MT500 range
Water repellent
Outer surface of the fabric is treated so that water runs off the surface
Product Lifestyle Image Gallery
Image Gallery
Questions & Answers
There are no questions
Be the first to post a question
Product Customer Reviews
Loading reviews…
Very good product
The sleeping bag is very comfortable and warm, but none of that matters if the sleeping bag can no longer be closed after two nights. No purchase recommendation!
Impossible to put back in its cover once unpacked. Bulk results in a bag. Not yet tested in real conditions.
It is an excellent sleeping bag for what it proposes. Negative points: - the smallest size available is M. Too big for a height of 160cm, for example. There should be size S - as always, packing it in the transport bag is difficult, it takes time for those who don't have much experience
Using this product since one month. It is not worthy as pr price. Specially discription given 5°c - -5°c. Seriously doesn't work in such conditions. If u planning to buy this to use in even 5°c u have to buy a blanket to use underneath. Not recommended for use above 10k ft. It's only 9°c and Im using blanket underneath. Specially the lower side is verry thin how can such product can save u from -5°c and u can see light passing through from inside of white side. Such a waste of money it cost more then 7k. If u buy 3k sleeping bag from local mrkt it'll be worth then buying this.
Does what it promises
In mid-October I started climbing Kilimanjaro. During the five nights that you have to spend in the tent, the temperatures can drop to below -10 degrees, even in Africa. So I needed a sleeping bag that could keep up there... and I found it :o) At over 4,500 m you still need merino underwear. Otherwise, the MT500 kept what was promised. Great sleeping bag! ... and the summit climb was also successful. ;O)
This product conforms to the description and I did not feel cold in the high mountains, no problem with storage alone and in less than a minute it was done, given the comments I think that some are not very good, only downside it is very but then very imposing in this cover otherwise perfect.
I used it in a 4-5 degree camping. I used a 2.7 r value mat and thin clothes and the night felt warm. Very comfortable and comfortable, I would definitely recommend it.
- Still no zip fastening in Decathlon sleeping bags. So it opens all the time! I point out to you that competitors have been doing this for a long time. + Beautiful dark green color. + Compressive cover. + 400G & in triple thickness, it swells very well. + 2 simple & effective tightenings. + Very thick and effective collar to insulate the opening. + Good value for money. + Realistic comfort temperature -5°. But only for a warm sleeper, and in the best conditions. + Does not stink of chemicals. My conclusion: I have been using it every day for 3 weeks, and I am satisfied with it. I warn you that it is huge. So I only carry it on the outside of my backpack.
Use at 5°C perfect I recommend the sleeping bag and no problem putting it back in its bag thanks to the DECATHLON recommendation!!!!!!
I used it in Malatya earthquake zone at -17. Good product
In pants/sweater under the tent in the bag with a temperature of +5°C (refuge warden who gave it to us), and with mattress! Cold to the point of not being able to sleep... Fortunately I was leaving for a 2 day trek otherwise I would have had to cut it short! I'm going to use it for summer and buy a spring/fall bag elsewhere. Conclusion a very bulky sleeping bag for very approximate thermal coverage.
not easy to fold up to put back in its cover
Good
Additional Product Information
Composition
Padding: 100.0% Polyester ; Main fabric: 100.0% Polyester ; Carry bag: 100.0% Polyester ; Lining: 100.0% Polyester
What is the temperature rating?
We display the comfort temperatures on all our sleeping bags, tested by an independent laboratory (AITEX) in compliance with European standard ISO 23537-1:2022. The comfort temperature rating is the lower limit at which the user in relaxed posture is generally in thermal equilibrium and feels neither too cold nor too hot (for a standard woman in normal conditions of use). Choose your sleeping bag according to this criterion.
What is the temperature rating (lower limit at which you feel comfortable)?
The comfort limit temperature is the temperature limit at which a person curled up in the sleeping bag is in general thermal equilibrium, neither too cold nor too hot (determined for a man in normal conditions of use).We recommend using an insulation mattress to optimise your thermal comfort.
An important clarification concerning the iso 23537-1 standard
In the context of this standard, the measurement protocol of a sleeping bag’s thermal protection uses a mattress with thermal resistance equal to an R-value of 4.8.This means that by using a less insulating mattress, the thermal performance of your sleeping bag will be lower.We therefore recommend you use an insulating mattress to optimise your thermal comfort.
Some advice to consider before you get into your bag
Dress simply (1 layer of clothing is enough). Warm-up your extremities: hats, gloves, socks, hand/feet warmers, rubdowns, etc. A flask of hot water can be used as a hot water bottle (as long as there's no chance of it accidentally opening!) Contract your muscles (70% of the energy consumed is converted into heat) but do it without moving as this could create a draught. Use a bag liner to optimise warmth and avoid washing your sleeping bag too frequently.
Style
Mummy shape that is wide at the shoulders and more narrow at the feet to optimise thermal insulation (no heat loss) and compactness, while maintaining relative freedom of movement.Width at the shoulders 74 cm, height at the feet 36 cm in size L. 78/38 in XL, 70/34 in M
Weight and dimensions:
Size M: 2000 g, user up to 1.69m tall. Bag dimensions: L 44 cm Ø 22.5 cm. 17.5 litre volume.Size L: 2100 g, user from 1m to 70m tall. Bag dimensions: L 44 cm Ø 23.5 cm. 19.1 litre volume.Size XL: 2400 g, user from 1m to 2m tall. Bag dimensions: L 44 cm Ø 24.5 cm. Volume 20,7 L. Volume & dimensions can vary according to the pressure applied to the product.
Functions
Ergonomic hood with drawcord.Double collar for protection from the cold.A baffle along the zips prevents heat loss.Double-slider zips for optimal ventilation.The top of the sleeping bag can be opened with the two side zips.
Want to know more about the wadding?
We use 3 layer of 100% polyester wadding (70% recycled) of 115 g/sqm.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.
Compatibility
Can be twinned with all the Forclaz MT500 sleeping bag models.Can be twinned with the older models in the 2017 ”Ultralight” and 2018 ”Light” ranges.
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.
Origin
Imported
Superior quality. Unbeatable prices.
For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.
Decathlon makes the difference
-
Research and development
delivers high-quality cost-effective products
-
State-of-the-art production processes
minimize manufacturing costs
-
Optimized supply chain
reduces retail prices
-
Minimal retail footprint
lowers overhead and indirect costs
US Backpacking Sleeping Bag MT500 23°F - Polyester
Your location: City, ST
Please enter a valid city with state or zipcode. Example: San Francisco, CA or 94101
Order online for
Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
| Weight Thresholds | Shipping within California | Shipping outside of California |
|---|---|---|
| > 9 lbs | $20.00 | $25.00 |
| > 30 lbs | $50.00 | $65.00 |
| > 100 lbs | $100.00 | $125.00 |
| > 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
