Probably the most popular Tilley Hat, the T3 was made originally as a sailing hat. Designed with a medium-sized brim, you can snap it up Aussie style, or leave it unsnapped for full protection from the elements. A lifetime investment in sun protection and good looks. The AMC American Cancer Research Center has tested all Tilley cotton duck and Tilley Nylamonite Hats and certified that they block 98% of harmful UVA and UVB radiation, and provide the highest certification rating of Ultraviolet Protection Rating (UPF) 50+. Brim Size: Front and Back: 2-3/4" Sides: 2-3/8" Weight: 5.4 oz. Hat Sizing: Tilley Hats fit more comfortably than other hats. To find your size, simply use a tape measure to measure around your head in inches, just above your eyebrows (do not pull tight). Order options are given in inches and hat size. If you already know your regular hat size, please order one size larger when you order your Tilley. Tilley"s Guarantee: If you ever succeed in wearing out your Tilley Hat, send us the remains and we will replace it free. If you want to keep your faithful, old, worn-out friend, tell us and we"ll return it to you. We understand. Upon purchase, your Hat is covered by a two year, all-peril, 50% deductible, Hat Insurance Policy to take the pain out of loss or irreparable damage. Washing Instructions: Machine wash in warm or cool water. Do not use bleach. Smooth and reshape the Hat by hand and set it out to air dry. Available in Natural with Green underbrim, solid Khaki and Khaki with Olive underbrim. Also, available thru special order are colors solid Olive, and Navy. In stock sizes 7 1/8 - 7 3/4. Also available thru special order are size 7, 7 7/8, 8 and 8+ (fits up to 8 3/8). Special orders take about 8-10 days to ship.