Basically you program the bluetooth connected apparel using your smartphone to your preferred level of toastyness (up to 130F) and enjoy up to 6.5 hours of heat. There’s quite a few bells and whistles but I found anti lost/theft feature pretty cool, the smartphone app will actually notifiy you if you become separated from your gear. They ain’t cheap (Gloves $180/Socks $159) but if you’re willing to pay a premium for comfort they may perfect for a teched out ski kit. MORE INFO HERE.