Bundle-heated ski socks- Ultra Warm Performance S.E.T + S-Pack 4000B Battery | 2027

Keeping your feet warm without sacrificing the fit of your ski boot won't feel like a constant battle with these socks, as they are built with Smart. Elastic technology and thermo-regulating knitting to create a thin sock that maintains warmth and a precise fit. New batteries set this year's model apart as they hold more battery power and a longer runtime than previous generations. Longer battery life makes these socks a dependable option for overnight hut trips and extended days on snow. The batteries clip onto buttons on the upper side of the ski sock that then transfer power and warmth through flat wires that run to the bottom of the sock.

When you're making your ascent, messing with a heated sock is the last thing you want to do. Two larger-capacity batteries pair with a new and improved Bluetooth app, letting you adjust the heat from your phone instead of digging into ski gear. After you've completed your journey, a new USB-C charging port makes it more compatible with chargers while traveling.