The California Heat StreetRider 4-Season pants are designed to be worn over your regular pants. Constructed of resilient nylon Cordura, the pants are both windproof and waterproof, with removable level 1 armor in the knees. The male plug on left side of the pants plugs into the yellow accessory plug of your jacket. The outer pants begin warming your body within seconds using any 12V DC power source by connecting directly to the battery or the 12V accessory outlet. Our advanced heating technology allows you to maintain a constant level of thermal comfort at high speeds or altitude. Features: Durable & abrasive-resistant Cordura shell with removable level 1 armor in the knees Windproof and waterproof with flexible Thinsulate insulation and breathable HiPora Side zippers and Velcro run ¾ up the length of each leg for easy wear & removal Elastic waistband with belt loops and a Velcro strap for an adjustable, comfortable fit Male plug in the top left pocket to connect directly to a controller or to your heated jacket Sock plug pockets at the bottom of pants to easily connect heated sock liners or insoles Very lightweight at less than 4lbs Heating elements located through the hip area and down the front of both legs Power: 55W @ 12V or 4.6A total Max Heat 135° F ***Do Not operate heating clothing without a temperature controller. Do Not leave heated clothing plugged in while unattended. Fire and burns could occur.