OTTO CAP Beanie - Acrylic Knit 10 Solid Colors Available OTTO CAP Beanie, Soft, Stretchy, & Warm. Designed without a cuff, giving it a sleek and streamlined look; The trim elevates its overall appearance and provides more fabric over the ears; Made from 100% Acrylic, a synthetic material known for its softness, durability, and versatility; Acrylic fibers trap heat effectively, keeping the head and ears cozy and insulated; Soft and stretchy fabric ensures a comfortable and snug fit