Tilley Original T3 Cotton Duck Hat Constructed from 10oz. cotton duck, a tough, soft, closely woven, mercilessly preshrunk water-and mildew-repellent, canvas-like material Hand-sewn using very strong thread; all seams are lock-stitched so they won't unravel The brass eyelets come from Britain and are the best available Certified sun protection fabric blocks 98% of harmful UVA/UVB radiation and delivers an ultraviolet factor (UPF) of 50+, the maximum rating given Secret Velcro closure pocket in the crown to stow-away keys, cash or credit card Medium-sized brim with sides that snap up in the Aussie manner