Stay cool and protected from the sun in this Hydro Cooling Cap or Hat Choose from a sun hat with a strap or a cap  Clever hat has a cooling inner-lining that retains cool water and slowly evaporates it Simply fill up with cold water, wring out the excess and then wear. Provides protection from harmful UV rays  Made from comfortable and durable materials so it can be used day after day Keeps your head cooler and is perfect for scorching hot days Features an adjustable strap to keep it secure on your head Unisex and one-size Sun hat dimensions: 41cm x 36cm x 2cm  Strap dimensions: 46cm  Sun cap dimensions: 23 x 15cm x 2cm  Perfect for outdoor activities in the sun  Buying Options:  5.99 pounds instead of 19.99 pounds for the sun cap - save 70%  7.99 pounds instead of 19.99 pounds for the sun hat - save 60%