Outback Trading® Men's Willis Hat keeps harmful UV rays at bay and protects faces, noses, necks and ears. Chin cords and ventilating grommets keeps it put and keeps you cool. Easy-fitting elastic sweatbands with Dry-Zone® moisture-transfer action keep heads cool, dry and comfortable. Cotton fabric UPF protection Large functional eyelets Ventilation grommets Crown: 4" Brim: 2 1/4" Chin cord Size Chart: Small = Size: 7 or 22 1/8" Medium = Size: 7 1/8 or 22 1/2" Large = Size: 7 1/4 or 22 7/8" XL = Size: 7 3/8- 23 1/4" Product Features: Fabric:100% Cotton Outback Trading Men's Willis Hat