With an old-school design, this Lined Beanie offers the warmth, comfort and classic style that is Patagonia. Although this hat is not reversible, it is shown reversed in the multiview to display its interior. Stretchy beanie with a regular fit. Fine-gauged knit exterior acrylic/wool blend is quick-drying and reliable. Fully lined interior with lightweight moisture-wicking fleece. 20.5 circumference. Outer: 51% acrylic, 49% chlorine-free wool. Lining: 5.2oz 100% polyester fleece. Hand wash cold, dry flat. Measurements: ; Circumference: 23 in ; Product measurements were taken using size One Size (21 1/2-23 1/2). Please note that measurements may vary by size.