Hand By Hand Aprileo Unisex Boonie Hat Wide Brim Bucket Outdoor Packable Cotton Ventilation side holes for good breathability,adjustable chin strap.Perfect for Outdoor Activities and Sports Small/Medium (inner circumference: 21-1/2, brim: 2-1/2, depth: 3) Large/X-Large (inner circumference: 22-1/2, brim: 2-1/2, depth: 3) Material: 100% Cotton product model #: H1102004