Outdoor Research Sentinel Brim Hat Unisex Fatigue S 243381-fatigue-S. The Sentinel Brim Het is treated with Insect Shield and helps protect against mosquitos tikcs and other biting insects. A wide brim mesh vents and lightweight UPF 50+ fabric keeps you covered and cool on adventures in hot climates. Specifications for Outdoor Research Sentinel Brim Hat: Manufacturer: Outdoor Research Gender: Unisex Age Group: Adults Fabric/Material: 100percent Nylon Water Resistance Level: None Additional Features: No Auto Igniter: No Features of Outdoor Research Sentinel Brim Hat Breathable Lightweight Quick-Drying No- See-Um Mesh Packs In Stash Pocket Drawcord Closure Packable Crushable Secures Underarms Around Chest Outdoor Research 243381-fatigue-S: Sentinel Brim Hat Unisex Fatigue