Turtle Fur - Sun Shell UV Tie Back Visor, Ultra Lightweight Performance Headband, Bountiful Bouquet Size One Size Size: Adult, One Size fits most. Also fits Juniors and Teens Sun Shell Ultra Lightweight Breathable Performance Fabric - 84% Recycled Polyester UPF 50+ Sun Protection - Blocks 97% of UV Rays Quick Drying Performance Adjustable Visor with a Terrycloth Sweatband Perfect for mountain biking, cycling, hiking, kayaking, climbing, running, fishing, SUPing, backpacking, travel, yoga, and many more outdoor adventures.