Tilley Hat - Cool Mesh, Lightweight Airflo Hat with Snapup Brim LTM3 (7 5/8, Natural with Green Underbrim (NTGR)) VERY lightweight - weighs about 4 oz. Airflo Mesh keeps your head COOL. Guaranteed FOR LIFE. Insured against loss for 2 years (50% deductible) Floats and repels rain. Machine-washable (won't shrink). Water and Mildew Resistant. UPF 50+ - EXCELLENT sun protection!