Mountain Hardwear Talus Sun Hat: The wide brim and UPF 50 provides superior sun protection. Mountain Hardwear Talus Sun Hat Features Durable and abrasion-resistant 4-way stretch fabric provides comfort and protection Mesh sides for ventilation Lightweight foam brim folds up and packs down small for shoving in a pack Dark, glare-reducing color under brim Wide brim provides full face coverage Drawcord attachment under the chin UPF 50 sun protection Materials Body: Switchback Plus (85% nylon, 15% elastane) Lining: Micro Mesh (100% polyester)