Women's 7V Battery Heated Pants - Black - Medium Microwire heating panels are close to your body and traps the heat - making it an i choice for all cold weather activities without adding bulky layers, Comfortable, stretchy, and soft fabric easily moves with you for indoor/outdoor activities, Powerful Microwire heating system includes built-in heating panels strategically placed on the knee/thigh and backside/seat to warm your body, Change heat settings with touch-button control technology, Battery voltage: 7 volt, Content: 92% Polyester / 8% Spandex, Pants include: , Gerbing 7V 2,600 mAh Rechargeable Battery, Single Wall Charger, Gerbing Lifetime Warranty