Winterheat 3400 Ski Boot Heaters including an external dual-purpose helmet/jacket

including an external dual-purpose helmet/jacket sling

With this system in mind

The junior shell construction puts flex and power transfer where they're needed most for effective ski control

these boots deliver a customized fit

Winterheat 3400 Ski Boot Heaters including an external dual-purpose helmet/jacketThe 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