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Fieldsheer Mobile Warming 7.4V Women's Proton Baselayer Heated Shirt

Fieldsheer Mobile Warming 7.4V Women's Proton Baselayer Heated ShirtFieldsheer Mobile Warming 7.4V Women's Proton Baselayer Heated Shirt

Fieldsheer Mobile Warming 7.4V Women's Proton Baselayer Heated Shirt

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Designed with versatility, function, and value in mind, Fieldsheer's Proton women's Heated Baselayer Shirt delivers uncompromising performance combined with our Mobile Warming Technology. Thin enough to be worn under an outer layer, snow jacket, or rain gear but stylish enough to be worn as activewear, the Proton Heated Baselayer is an essential piece of any woman's outdoor kit. Our Powersheer 7.4-Volt Lithium-Ion battery is supported by a universal USB charging port and can provide heat for up to 10 hours on a single charge. 4 distinct heat settings put you in control, and with seamless Bluetooth connectivity on our proprietary MW Connect app, you can stay warm in even the harshest winter conditions. Easily toggle between heat settings to find the perfect level of comfort on even the coldest winter days.

Perfect for every season, the Proton Heated Baselayer Shirt features a subtle gray camouflage detail across the front and back, giving it a sporty vibe. At the same time, a 3/4 zipper allows you to easily layer up or down as the conditions change. Multi-zone heat elements across the back deliver even warmth, and in-seam thumbholes keep your hands warm without sacrificing mobility. A midweight baselayer, the Proton is perfect for days when you begin early in cold conditions, and our Sweatsheer technology quickly wicks moisture away from the body, keeping you warm and dry for hours on end. The Proton Heated Baselayer Shirt allows you to keep going no matter what the conditions throw at you, and by maintaining a healthy temperature, you reduce fatigue, muscle soreness and decrease sensitivity.

Fieldsheer continues to deliver unparalleled performance and rugged durability without sacrificing comfort, mobility, or value. Since 1978 Fieldsheer has been a leading manufacturer of outdoor apparel and heated clothing. We know that conditions can change rapidly, and our Proton Heated Baselayer Shirts let you adapt and stay warm in any environment, from early spring jogs to late fall camping or a fresh powder day in the backcountry. Versatility is the name of the game when it comes to cold conditions, and our team of designers and engineers strive to produce cold-weather gear that won't let you down when you need it most. The poly-blend combined with a thermal midweight layer and rib-knit cuffs and waist offers unparalleled comfort and performance, keeping you in the field and doing what you love longer.

Baselayer Features

  • 60% Polyester, 30% Rayon, 10% Spandex
  • Sweatsheer Moisture Wicking Mesh Liner
  • Midweight Base Layer
  • In-seam Thumb holes on cuffs
  • Quarter-zip
  • Multi-Zone Heat Elements: 2x Back
  • Integrated Touch Control Button
  • 4 Selectable Heat Settings
  • 7.4volt Rechargeable Lithium-Ion Battery
  • Up to 10 Hours of Power Per Charge
  • Universal USB Charging Input

Battery Features

  • Powersheer Standard Rechargeable Lithium-Ion Battery (7.4V 2200mAh)
  • Up to 10 Hours of Power Per Charge
  • UL/CE certified
  • USB Cable included
  • Charge Time 3-4 hours

Footnote: Charge time is based off using a USB-A wall charger that delivers 5V@2.1A.


  • (1) Proton Heated Baselayer Shirt
  • (1) Powersheer Rechargeable Lithium-Ion Battery (7.4V 2200mAh)
  • (1) Micro USB cable

Mobile Warming products are designed with the outdoors in mind; the range of applications is wide-spread including skiing, hunting, hiking, fishing, motorcycling, golf...even work. Breakthrough technology provides outstanding levels of comfort and warmth for an entire day at the touch of a button; exceeding the efficiency of any other warming system available in outerwear today. Mobile Warming is committed to continuing to provide customers with the best quality, best priced, and best performing heated products on the market.

STAY WARM, STAY COMFORTABLE Industry Leading Heat Performance

Patented Mobile Warming technology is specially engineered for cold environmental conditions. Mobile Warming comprehensive heating solutions keep you warm and comfortable. The exclusive Mobile Warming heating system utilizes F.I.R. (Far-Infrared) heat and ultra-fine metal fiber heating elements powered by lightweight, rechargeable, and powerful Lithium-Ion batteries. As heat builds Mobile Warming advanced materials reflect and direct heat back towards the body ensuring that you stay warm. The combination of unique materials, construction techniques, and innovative design results in the most advanced heated gear available.

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