Piao-cap UV 50+ Summer Hat Protection Outdoor Multifunctional Flap Cap with Removable Sun Shield and Mask Perfect for Fishing Hiking Garden Work Outdoor Activities UPF 50+ Summer Hat with Neck Protection Flap with Removable Sun Shield and Mask Perfect for Fishing Hiking Garden Work Activities Head girth measures 21.6-23.6 inches can be adjusted Remove cap shade can become fashion baseball cap Flap measures 10 inches long, 18.5 inches wide, side mesh on the cap Mask measures 8 inches long, 11.5inches wide, mesh in the middle to allow breathing