Designed with absolute comfort in mind for rock and snow lovers, the inventive helmet-compatible construction of the ThermoNet Beanie makes it an essential for cold weather climbing and winter sports. The simple, seamless design offers 4-Way stretch and bonded seams for a super-low profile and ultimate comfort. Not only is it compact, but PrimaLoft technology offers exceptional warmth for fast and light adventures. Oh, and it's made using 58 percent recycled content. Low weight, low impact.