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or long days working outdoors
this high-output Li-Ion battery delivers double the heat duration compared to standard models—perfect for long workdays
and 3 heat zones to keep your core comfortable in cold conditions
Streamlined warmth for wherever the day takes you
The Proton Heated Baselayer Shirt features a midweight printed knit design with a soft lining
Proton 2.0 Baselayer Shirt Women's - Ice Blue Size:SM or long days working outdoorsStylish 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.
