Simond
Simond MT500 -10 °C Hooded Down Jacket (men's)
- Warmth: 7/10 How warm it keeps you standing still at camp.
- Weight: 7/10 How much it adds to your pack.
Cold dry camps and bothy evenings from about 0 °C down to a few degrees below, as an outer layer at rest
- Weight
- 440 g (L)
- Insulation
- Down
- Fill power
- 800
- Fill weight
- 140 g
- Hood
- Yes
Where to buy
Decathlon UK £69.99 In stock. Delivery from £2.99; Decathlon sells its own Simond range, and no other UK shop stocks this jacket.
View at shop: Decathlon UKPrices checked 8 Nov 2026 on each shop's own page; shops can change them. We earn no commission on these links; shops are listed by price. More
Our ratings (out of 10)
1 to 10, compared with the whole market. Each says what it's based on. How we score
Warmth
From reviews 7/10How warm it keeps you standing still at camp. 7: Better than most.
Three video reviewers and Decathlon buyers put it at about 0 °C: Backpacking UK says it excels around zero, Danny Outdoors was happy to about -5 °C while walking but it took a little walking to warm up, Backcountry Exposure would be cold at about 0 °C with wind and no mid layer, and Decathlon buyers report staying warm at -6 °C on the move. Decathlon's own -10 °C comfort rating is not used. Fill is 140 g of 800 fill power down in size M.
Weight
From maker's figures 7/10How much it adds to your pack. 7: Better than most.
Decathlon's 440 g is for size L and falls in the 350-449 g band; no size M weight is published. A reviewer weighed size M at 420 g with its 12 g pouch, the same band, so the score holds for M.
What reviewers say (out of 10)
Ratings marked * are from reviews and are not part of the trip score. They are reviewers' scores, not our own measurements. How we score
Damp weather*
Reviewers' average 6/10How well it stays warm when damp or in drizzle.
3 reviews on damp weather, e.g. "Light drizzle and snow shed off the surface effectively".
Reviewers disagree on this.
Fit*
Reviewers' average 7/10How well it fits and moves, over and under other layers.
5 reviews on fit, e.g. "If you are expecting a relaxed, roomy feel, it may not suit you.".
Reviewers disagree on this.
In short
Good for
- Cold dry camps and bothy evenings from about 0 °C down to a few degrees below, as an outer layer at rest
- Budget first down jacket for wild camping
- Spare warm layer to wear over a fleece on winter hill days
Strengths
- Down is RDS certified and the shell and lining are PFC-free
- Hood and five pockets; Decathlon gives a 2-year warranty
Weaknesses
- Runs small: reviewers suggest sizing up
- Shell is not windproof by Decathlon's own spec and not made for rough ground
- Down loses warmth if it gets wet and there is no hydrophobic treatment
- No packed size published and size M weight not published
- Heavier than premium down jackets, about 420 g in size M
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.
ShowHide sources (8)
- Decathlon UK: Simond MT500 -10 °C hooded padded jacket (men's)
- Decathlon UK customer reviews (2,040 reviews, 4.7 out of 5)
- Backpacking UK: Simond Mountaineering down jacket review (YouTube)
- Danny Outdoors: Simond MT500 long-term review (YouTube)
- Backcountry Exposure: Simond MT500 down jacket review (YouTube)
- Test4Outside: Forclaz MT500 down jacket test (French)
- Me And My Jackets: All About The Decathlon Simond MT500 Down Puffer (YouTube)
- Indiahikes Gear Circle: SIMOND MT500 Down Jacket review