Made in CANADA. Uses Canadian Sizes, NOT UK HAT SIZES. See the sizing info tab for details.Tilley hat’s LTM5 Airflo Nylamtium in natural are constructed of a durable, water resistant, 6 oz 2-ply Supplex nylon, lightweight and fast drying fabric. Each stitch is lock-stitched, and the poly-cotton thread swells when wet, sealing the needle holes against the rain. Airflo Hats incorporate mesh in the crown for extra breathability in hot conditions. Hat Details:Brim Size: Front - 2 5/8 inches, back 2 3/4 inches, Sides, 2 1/8 inchesCrown Height: 4 inches-Guaranteed for life and insured against loss -Certified sun protection - delivers an Ultraviolet Protection Factor of 50+ -Stays on in the wind using the wind cord - even while skydiving! -Won't shrink - Made with Tilley Nylamtium® -Hydrofil anti-sweat band to wick away moisture -Lightweight and water-repellent - Made with Tilley Nylamtium® -Floats - closed-cell foam in the crown -Secret pocket in the crown - carry ID, cash or credit card -Repels rain and mildew resistant -British brass grommets -Comes in every human size -Machine washable, won't shrink -Includes a 4-page Owners Manual Tilley Hat Size Guide: 6 7/8 - 55cm, 7 - 56cm, 7 1/8 - 57cm, 7 1/4 - 58cm, 7 3/8 - 59cm, 7 1/2 - 60cm, 7 5/8 - 61cm, 7 3/4 - 61.5cm, 7 7/8 - 62.5cm, 8 - 63.5cm, 8+ - 66.5cmTilley Sizing Info: Tilley uses Canadian sizing, which is one size larger than UK sizing. If you are a UK size 7, then you would wear a Canadian size 7 1/8. Tilley suggests ordering a size above your usually hat size. If you are a UK size 7, Tilley recommends ordering a Canadian size 7 1/4. This is both for comfort and in case the hat shrinks.If you have any questions, please call us at 0844 357 7614. We are happy to help.