Shredder Ski Mask. The stretchy, wind-resistant Shredder Ski Mask has a soft lining that feels supremely comfortable next to your skin, and it has an adjustable Velcro® closure to help you get a secure fit to lock out the wind. " Fabric | 94% polyester, 6% elastane " Sizes | OS " Lightweight and packable " Wind-resistant " Seamsoft thread - micro filament, textured polyester thread to prevent skin irritation " Adjustable Velcro® closure for a secure fit " Heat transfer logo