The Sardine Skull Cap is constructed from Polartec fleece, offering a breathable, stretchy, and soft fit suited to active outdoor use. Handmade in Steamboat Springs, Colorado, it carries a close-to-head profile typical of skull caps, making it a functional layering piece for running, skiing, hiking, or cycling in cooler conditions. Available in three sizes to accommodate a range of head circumferences, from 20 to 24 inches.