OTTO CAP 9 1/2" Premium Rib Knit Beanie - Super Soft Acrylic Knit 9 Colors Available OTTO CAP 9 1/2" Premium Rib Knit Beanie , Super Soft Acrylic Knit for Luxurious Comfort . Designed without a cuff, giving it a sleek and streamlined look; The ribbed knit construction creates a textured pattern of raised vertical lines; Boasts a super soft acrylic knit providing a gentle and cozy feel; 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