product information: Colour: Black Material: Polyester Suitable for head circumference: 54-58cm Weight: about 43 grams Features: Breathable, Anti-UV 40, Dustproof, Sweat-absorbent Applicable environment: cycling, running, climbing, hiking, etc. Packing list: 1 * Bike mask 1. High Quality Fabric: Professional Blcool material with excellent performance in breathability, water absorption, moisture absorption, durability and abrasion resistance. very soft. wrinkle free. Light. Keep warm and dry. 2nd variety: suitable for skiing, snowboarding, motorcycles, running, hiking, mountaineering, hunting, etc. 3. Free Size Best Fit: The elastic design is suitable for women, men and children. 4. Multifunctional: can be used as a face mask, hood, dust cover, scarf, headscarf