Amazon.com: Ergodyne Chill Its 6634 Cooling Headband, Sports 。Men\'s Lightweight Cooling Headband — Stay cool, protected, and comfortable outdoors. Size: One size Color: Black Condition: Brand new, no flaws. Features: Lightweight headband with UPF 25-30 sun protection, blocking 97% of harmful UV rays. Made from a quick-drying, sweat-wicking fabric that keeps you cool. It has a stretchy, 4-way design that moves with you, plus anti-odor tech for all-day freshness. Great for outdoor activities like hiking, cycling, working outside, or even wearing under a helmet on hot days. Material: 86% Polyester, 14% Elastane Measurements: One size fits most Great for: Sun protection while working or playing outside, keeping sweat and hair out of your eyes, and staying cool on hot, humid days. Ships quick from smoke-free, pet-free home. Friendly seller — bundles save more!