By combining lightweight, abrasion-resistant nylon with conductive-thread heating elements, the Gobi Heat 3-Zone Heated Vest for Men is your perfect solution for keeping warm on the go. Ultra-compact battery supplies 3 times the power of other competitors and has a USB port for easy mobile charging. Heat zones in the chest and back warm your core muscles and increase circulation. Choose between 3 heat settings using the 1-touch LED controller: Low (113 F), Medium (131 F), and High (140 F), you can customize your warmth to match any situation. Included 7.4V 5000mAh lithium polymer battery that will last up to 10 hours on low, 8 hours on medium, and 6 hours on high. Gobi Heat 3-Zone men's heated vest features wind- and water-resistant lightweight nylon construction. Wind- and water-resistant lightweight nylon construction Conductive-thread heating elements USB port for easy mobile charging Heat zones in the chest and back Choose between 3 heat settings using the 1-touch LED controller 7.4V 5000mAh lithium polymer battery Heats for up to 10 hours