• Acrylic • Built-in pull-down balaclava Around the town style meets on-mountain function. Seirus® Quick Clavas® turn stylish hats into awesome full head and face protection against the cold. The patented system lets the clava sit comfortably inside the hat when it's not needed, and then easily pull down for total coverage when conditions demand. Featuring an acrylic construction, the Spartan™ Quick Clava® is the perfect addition to your winter kit.