OTTO CAP 9" Classic Knit Beanie w/ Inside Fleece Lining - Acrylic Knit w/ Fleece Lining OTTO CAP 9" Classic Knit Beanie w/ Inside Fleece Lining, Inside Fleece Lining for Ultimate Warmth and Comfort. Designed without a cuff, giving it a sleek and streamlined look; Dual-layered construction made from 100% Acrylic (Outside) & 100% Polyester (Inside); The inside fleece lining feels soft and plush against the skin and helps keep the head and ears warm; Made to be snug yet comfortable, the beanie hugs the head without feeling too tight