Proton Baselayer Shirt Women's socks front zip closure

front zip closure

high-altitude runs

Experience comfort on a whole new level with our 5-layer constructed

Designed to layer or stand on its own

4 Adjustable Heat Settings (90° up to 135°)

Proton Baselayer Shirt Women's socks front zip closureStylish 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.