Mountain Lab Bluetooth Heated Socks YCRF_mc_mx_boots Boa® fit system for fast

Boa® fit system for fast precision fit

Graphics: Fade-free sublimation prints

Wide shoulder and chest cover prevents wind infiltration

Fresh and smooth breathable fabric

ICONSport Fit jacket is designed with slightly pre-curved arms

Mountain Lab Bluetooth Heated Socks YCRF_mc_mx_boots Boa® fit system for fastThe Bluetooth Heated Socks use the Mountain Lab smartphone app to control the heated socks through Bluetooth connectivity. Each sock can be controlled individually for heat intensity and turned on and off. The Bluetooth Heated Socks can alternatively be controlled by a button located on the cuff of the sock, for use without the app.