OTTO CAP 9 1/2" Lightweight Beanie - Polyester Jersey Knit 2 Solid Colors Available OTTO CAP 9 1/2" Lightweight Beanie, Lightweight, Stretchy, & Comfortable for All-Day Wear. Designed without a cuff, giving it a sleek and streamlined look; Its thin, lightweight construction offers a comfortable, barely-there feel, making it perfect for extended wear; Made from Polyester Jersey Knit Fabric (95% Polyester / 5% Spandex), this beanie offers a soft, smooth, and stretchy feel that is comfortable against the skin; Polyester helps keep the head dry by drawing sweat away from the skin, making it perfect for workouts and outdoor activities