12v Heated Jacket Liner review » Heating pads on the chest, back, collar, and sleeves » Compressible, water-repellent, durable, Thinsulate® insulation » Teflon® coated, wind-resistant, soft nylon shell » Inside and outside pockets » Silky soft micro denier collar » Form-fitting patterns and sizing to fit snugly and easily under your outer garments » Glove plug pockets placed on the sleeves secure the plugs when not in use » Power Distribution Unit eliminates dangling cords » Dual 2 wiring configuration (for one user only) » Lifetime warranty on heating elements » Incorporates Gerbing's Microwire® heating technology that uses micro-sized heating fibers to surround the body with warmth. SpecificationsHeatMicrowire® Heat TechnologySource12-volts DCCurrent6.4 ampsWatts77 wattsSurface Temp135°F +/- 5°F at 32°F