Surfing. This is an official NSA (National Surfing Association) merchandise cap. Rare item sold during the Tokyo Olympics. New and unused, but because it's white, although there are no noticeable stains, please refrain from purchasing if you are sensitive to such things. First of all, it's rare, so it will stand out when worn! The size is a snapback, so I think it can be adjusted for anyone, male or female, or kids. It's seriously cool for surfers.