UPF 50+ Swim Flap Hats' fabric is designed to provide excellent sun protection from damaging UV rays. The hat has a large brim to shade the face and the flap covers the ears and neck from the harsh rays of the sun with an elastic band to help fit snuggly around the head. This hat looks terrific when paired with Flap Happy Swimwear or Playwear. Perfect for any outdoor or water activity! Fabrication: 83% Repreve Recycled Polyester, 17% Spandex