This is a tartan check cap from Acne Studios. It's a free size, and the material is a thick, woven fabric like cotton canvas, with a shallow, jet cap style similar to Supreme's camp hats. Acne is known for its clean items, but I also like the UK and punk-inspired designs they occasionally release (I bought this around the time Acne changed to Acne Studios, when knitwear items were becoming popular. It was about 10 years ago, and there weren't many logo items like there are now, and the prices weren't as high-end as they are now). It's easy to use as an accent with patterned items on clean, single-color items like mountain parkas and coats, and it can also be used for a UK punk look with the tartan check, so it would go well with brands that have a strong connection to music, such as UNDERCOVER. (It looked good with a black Chester coat or a Burberry trench coat. The material can be worn year-round, so it also goes well with plain white or sax shirts, or single-color hoodies.)