Simond
Simond MT500 Merino Wool Trekking Hat (Black)
- Warmth: 7/10 How warm it keeps your head and ears, from its type and fabric.
- Wind and rain: 1/10 How well it keeps wind and rain out, from the maker's claims and fabric.
- Weight: 8/10 How much it adds to your pack.
A cheap, light spare hat for cool-weather walking and cold nights in a tent (Decathlon says it keeps the head warm in tent bivouacs)
- Weight
- 34 g
- Type
- Beanie
- Weather protection
- None
- Fabric
- 100% merino wool, ultra-fine 18.5 micron (Decathlon lists main fabric 100% wool)
Where to buy
Decathlon UK £12.99 In stock. Black (ultra black); the Blue costs the same. Delivery from £2.99, set by size and weight and shown in the basket; free for members on orders of £80 or more.
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
Estimate from maker's specs: hat type and fabric 7/10How warm it keeps your head and ears, from its type and fabric. 7: Better than most.
Estimate from maker's specs
Wind and rain
Estimate from maker's specs: maker's wind and water claims 1/10How well it keeps wind and rain out, from the maker's claims and fabric. 1: A real weak point.
Estimate from maker's specs
Weight
Estimate from maker's specs: the maker's weight 8/10How much it adds to your pack. 8: Clearly better than most.
Estimate from maker's specs
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
Comfort*
Estimate: only 1 review about comfort (fewer than the 3 we need, so never above 8) 8/10How comfy it is over a long day, without itching or slipping.
1 review on comfort, e.g. "comfortable, soft, very light and fitted under my climbing helmet".
In short
Good for
- A cheap, light spare hat for cool-weather walking and cold nights in a tent (Decathlon says it keeps the head warm in tent bivouacs)
- Under a bicycle or ski helmet: Decathlon lists it as compatible with both
- Multi-day trips where a merino hat resists smells better than a synthetic one
Strengths
- 100% merino wool, ultra-fine at 18.5 microns, which Decathlon says does not itch
- 34 g in Decathlon's product data, so it packs to almost nothing
- Decathlon says wool absorbs moisture to keep the head dry, and rates the fabric breathable
Weaknesses
- Not waterproof and not windproof, as Decathlon lists it
- Thin: Decathlon lists it for cool weather and calls it thin but warm
- Decathlon doesn't show a weight on the page, so 34 g comes from its hidden product data
- Sold only by Decathlon, so there is no second shop to compare
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.
ShowHide sources (3)
- Decathlon UK: Merino Wool Trekking Hat MT500, Black (product 302969, ID 8927845; brand SIMOND; 100% wool, 18.5 micron merino, cool weather, not waterproof, not windproof, price 12.99)
- Decathlon UK customer reviews: Merino Wool Trekking Hat MT500 (3,228 reviews, 4.82 out of 5; shop reviews, shown as a fact and not used for any score)
- Decathlon UK customer reviews: Merino Wool Trekking Hat MT500 - Black (3,268 reviews, 4.81 out of 5; Decathlon makes Simond and sells it)