The LT5B Tilley Hat offers a medium brim and is made with a breathable nylon fabric featuring a weather and stain resistant finish. The tightly woven fabric provides great abrasion resistance and continues to keep its great shape no matter what situation you put it in. Excellent breathability ensures you stay at your best no matter what the conditions and superior comfort means once it\'s on you wont want to take off. A secret pocket allows for a small amount of storage and a dark under-brim finish offers great glare protection. Measurements: Front Brim: 2 5/8\", Back: 2 3/4\", Sides: 2 1/8\" GUARANTEED FOR LIFE: Tilleys are replaced free if they ever wear out, shrink or fall apart. They`re so carefully handcrafted by Tilley in Canada, and made of such strong materials, that many outlive their owners. FLOATS: A layer of closed-cell foam in the crown, and sometimes in the brim, provides the Tilley`s positive buoyancy. TIES ON: When it`s calm, the Wind Cord stays hidden in the crown. When there`s a breeze, place the part with the sliding knots behind your head. When it`s windy or you`re sailing, use the chin part too. REPELS RAIN: The Lighterweight Nylamtium Tilleys are excellent at repelling rain. CERTIFIED SUN PROTECTION: The fabric and style of all Tilley Hats have been certified to block 98 percent of harmful UVA/UVB radiation and deliver an ultraviolet factor (UPF) of 50+, the maximum rating given. MACHINE WASHABLE