Features of the Tilley Airflo Wide Brim Hat Maximum sun protection - fabric is certified UPF 50+, the Highest given An abundance of shade - broad brim offers great sun protection Air flow - 3/4in. mesh around crown allows for extra ventilation Water-repellent finish keeps off the rain Front & back wind cords system secures hat in gusty conditions Double wire in brim for added stability HydrofilA(R) sweatband to wick moisture away Keep valuables safe in the secret pocket Buoyancy ? stays afloat in water