Mobile Warming Heated Glove LinerThe Fieldsheer 7.4-volt heated glove Liners are one of our 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!Heated Glove Liner Features: Stretch Polyester Shell Slim-Fit to Use Under Any heated glove Gauntlet Hook & Loop Closure Integrated Wire Harness Connectors 4 Selectable Heat Settings Heat on Outside Perimeter of Fingers Integrated Waterproof Touch Control Button Mobile Device Touch Screen Compatible Available in XS, SM, MD, LG, XL, 2XL & 3XLBattery Features: Split Pack Rechargeable Lithium-Ion Battery (7.4V 2000mAh) Up to 8 Hours of Power Per Charge UL/CE certified AC wall charger included Charge Time 3-4 hours* * Footnote: Charge time is based off using included AC wall chargerIncludes:(1) Pair Heated Glove liner (7.4V)(2) Split Pack Rechargeable Lithium-Ion Battery (7.4V 2000mAh)(1) AC Charger