Winterheat 3400 Ski Boot Heaters Ski Boot Heaters Spherical Carbonic-x lens for distortion-free

Spherical Carbonic-x lens for distortion-free optics and impact resistance

Together with a moderate 85-rated flex

The BOA® Fit System wraps the foot uniformly for a precision fit and increased hold that gives you more confidence on your skis

durability

Winterheat 3400 Ski Boot Heaters Ski Boot Heaters Spherical Carbonic-x lens for distortion-freeThe Winterheat 3400 Bluetooth Batteries are the best boot heaters on the market. With hours of powerful heat, these heaters will keep your feet warm so you can focus on enjoying your day outside! Winterheat batteries are compatible with Surefoot Custom Liners, no installation required. Features With the Winterheat 3400 Bluetooth battery, you can control the strength of your heat remotely using your smartphone. Up to 17 hours of heat Comes with a