The Fieldsheer® 7.4-volt heated glove Liners are one of their top-selling garments designed to fit under any heated glove. Engineered with high-quality stretch polyester, the Fieldsheer® powered by Mobile Warming® heating technology heated glove Liners are ultra-thin, to have a form fitting design, but provide long-lasting warmth. Powered by a set of ultra-slim, Mobile Warming ® 7.4-volt rechargeable Lithium-Ion batteries that provide outstanding heating power for hours on end. The integrated touch control button gives you power to adjust for maximum comfort and long-lasting power. Adjust temperature easily with an integrated touch button controller in-cuff. Choose from 4 different temperature ranges to ensure you can find your perfect temperature. Take your favorite heated glove to the next level and grab a set of Fieldsheer® 7.4-volt heated glove Liners today!