Revolutionary Sun Protection! The Adventure Hat, one of the best selling sun hats was designed with one specific purpose; complete 360 degree solar coverage. It has been awarded an unprecedented 13-point utility patent for sun protection. The utilization of ultra lightweight sun protection fabric offering 50 UPF (Mesh vents not rated) allows these hats to feel nearly weightless (only 3 oz). The Adventure Hat remains cool and comfortable all day long regardless your activity, gender, or body type with mesh side vents and wicking headband. 4" front brim with floatable foam core and poly brim wire and 7.5" back veil with lift-up tab. You can feel confident knowing your nose, cheeks, lips, eyes, ears, and neck have an excellent UV shield. Adjustable sizing through a unique rear sizing tape customizes 2 sizes to fit 98% of all adults. Chin strap with cord lock. Cream-Sand (only) is available in size Small. Sizing (Head Circumference (Inches), Traditional Hat Size): Small: 20-21", 6-6 3/4"; Medium: 21-23", 6 3/4-7 1/4; Large: 23-25", 7 1/4-7 7/8. Weight: 3 oz. *** Second color listed is the under brim color.