1、Lint material can keep you warm and prevent wind, dust and uv ray in winter, which is especially designed for sport 2、Air holes design is breathable to ensure comfortable breath 3、Hook and loop closure allows you to adjust the size according to your head circumference 4、Perfect for cycling, motorcycling and other outdoor activities 5、One size can fit most adult's head with ease Features: Lint material can keep you warm and prevent wind, dust and uv ray in winter, which is especially designed for sport. Air holes design is breathable to ensure comfortable breath. Hook and loop closure allows you to adjust the size according to your head circumference. Perfect for cycling, motorcycling and other outdoor activities. One size can fit most adult's head with ease. Specifications: Material: Lint Optional  Colors: Black Red, Gray Orange Size: One Size (15 * 31cm / 6 * 12inch) Suitable For: Adult Weight: 50g Gender: Unisex Type: Clothing Accessory Function: Preventing Wind and Dust & Keeping Warm Package Includes: 1 x Bike Face Mask