Burton AK Oven GORE-TEX INFINIUM Mitten Ballad Blue Ski Snowboard Men's NEW. Under Cuff fit. Extended length Storm fit. Removable wrist leash. The Grip and Dexterity of Leather. Hybrid design combines a durable leather palm with GORE-TEX INFINIUM™ softshell for a flexible design that leaves your hand fully functional. The Warmth of Down. A blend of Primaloft® Gold synthetic insulation and responsibly-sourced down cranks up the heat, so you can ride longer. Full Coverage An extended-length storm cuff seals out cold, wind, and snow.