Designed with absolute comfort in mind for rock and snow lovers, the innovative helmet-compatible construction of the ThermoNetA(R) Headband makes it an essential for cold weather climbing and winter sports. The simple, streamlined design measures a comfortably compact 10cm in width for a super-low profile, and bonded seams mean no chafing when you&';re in motion. Not only is it compact, but single-layer PrimaLoftA(R) ThermoNetA(R) technology offers exceptional warmth and moisture-wicking for fast and light adventures. Oh, and it&';s made using 0.25 recycled plastic bottles. Low weight, low impact. ThermoNetA(R) Technology: light, warm, seamless. Polyester microfiber made of recycled plastic bottles. Ideal for snow and winter sports.