Proton 2.0 Baselayer Shirt Women's - Ice Blue badge_promo_Sold Out featuring a merino wool-blend outer

featuring a merino wool-blend outer shell and soft interior lining

(1) Balaclava

arch support

and built-in odor control to keep you concealed and comfortable

and Baselayers

Proton 2.0 Baselayer Shirt Women's - Ice Blue badge_promo_Sold Out featuring a merino wool-blend outerStylish 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.