Proton Baselayer Shirt Women's warming Best of all is our

Best of all is our Powersheer XL heat system

Integrated Mobile Warming® Technology delivers reliable heat

high-pile lining for added insulation

Designed with a waterproof membrane rated at 15

it fits comfortably under any jacket—or stands strong on its own

Proton Baselayer Shirt Women's warming Best of all is ourStylish warmth from base layer to outer layer. The Proton Heated Baselayer Shirt features a midweight printed knit design with a soft lining, flat stitching, and a 1 4 zip for easy ventilation. In seam thumbholes add a secure fit, while 3 heat zones deliver consistent core warmth. Whether layered under your winter gear or worn on its own, its the perfect blend of comfort and performance.