The Burglar Beanie™ is constructed of Polartec® Power Grid Fleece that offers a high-level thermal and wicking performance. Made of a single-layer top and a folded two-layer section for the ears, The Burglar Beanie™ strikes a perfect balance of breathability and warmth. The design of the Burglar Beanie™ lends itself well to being worn with a helmet without bunching up or shifting around.