Offering amazing warmth and comfort, our Capileneâ„¢ Air Balaclava is made with a breathable blend of RWS-certified merino wool and recycled polyester airblasted to increase loft while reducing weight. All of the virgin wool Patagonia sources is certified to the Responsible Wool Standard (RWS) to help ensure protection both for the animals that supply it and the land they graze.