Turtle Fur Bamboo Fiber Frost Liner Ultra Light Earflap Helmet Liner Black Tech Fabric: Bamboo Size: Adult, One Size fits most. Also fits Juniors and Teens. Dimensions - 9.875"(w) x 8"(h). Lightweight Single-layer Bamboo Lined with Pontetorto Micro Fur fleece at ears. 100% Polyester. Machine Wash Cold, Tumble Dry Low Heat Bamboo made from 94% Bamboo Viscose, 6% Elasthane