The Woody Cap with Hidden Flap combines the simple design of a regular baseball cap with a hidden neck flap that provides weather protection when necessary; the flap folds into the zippered mesh compartment on the hat when not in use. The cap itself offers UV protection, water resistance, and moisture and temperature management with sweat wicking band and mesh ventilation. Made with 100% nylon. Available in khaki. Sizes :Medium and Large. UV Protection UPF 50+. Water Repellent. Moisture Wicking Sweatband. Self-fabric Neck Flap Folds Into Zippered Mesh Compartment On Top of Head. Mesh Ventilation on Sides. Available in two colors for your choice.