Sunday Afternoons has taken design cues from the traditionally popular 'Booney' hat and added their signature lightweight comfort and sun protection to create the best selling Cruiser Hat. UPF 50+ certified breathable nylon sun fabric with crown ventilation will keep you cool. Wicking brow sweatband keeps sweat out of the eyes. Spiral stitched foam core brim - 3" front and sides, 4" back offers ample solar coverage. Unique side 'brim-shapers' can be bent to fit your personal style. Elasticized rear sizing cord and chinstrap holds hat in place when the wind picks up. Packs flat. Lightweight 3.7 oz. Ideal Uses:Travel, Beach, Backpack, Walking, Leisure, Gardening, Outdoors Activities, Fishing, Boating. Sizing (Head Circumference (Inches), Traditional Hat Size): Medium: 21-23", 6 3/4-7 1/4; Large: 23-25", 7 1/4-7 7/8. Weight: 3.7 oz. *** Second color listed is the under brim color.