Only tried on and stored at home. SanProtection Zone Very cute, and the brim is wide, so it's also effective against UV rays‼️ There's no size listed, but it's about 25.5cm when laid flat. There's also an adjustment string around the head, so it can be made smaller. Aloha Kids Cap Kids Hat, Kids Hat Outdoor, Camping, Sea Swimming, Pool, Camping UV, UV, Flashy, Eye-catching Women's Hat Women's Hat Women's Cap Top