Product Description Self-Contained Heated Seat Cushion Charges Battery on 120VAC, Heats When You Sit On It Hunters , fishermen and sports enthusiasts need the Bench Warmer seat cushion . This UL listed heated seat cushion has a self-contained battery that charges on 110VAC and begins to keep your bottom warm when you connect two cords. Use the outdoor sports cushion in cars, unheated warehouses, hunting blinds, or anywhere bottoms get cold. Heating ability lasts 5 to 7 hours. Heated seat cushion fit all new stadium seats . The Benchwarmer is large enough not to slip through seat to the floor when you stand to cheer. Manufacturer recommends overnight charging prior to first use. You cannot overcharge the battery. Built-in rechargeable seat warmer batteries charge overnight (110VAC). Portable, lightweight, water resistant DuPont 1000 denier Cordura nylon. Use Bench Warmer heated seats / chair cushions for : Football Games Snowmobiles Flying Automobiles Boating Hunting Fishing and Ice Fishing Wheelchairs Bench Warmer Specifications: Handy Carrying Handle. Cover: Rugged DuPont Cordura fabric. Cushion Size: 15 wide x 16 long x 2 thick. Quality Foam: Years of comfort. Water Resistant. Note: never submerge or expose to prolonged moisture. Colors: Black, navy blue, camouflage and green. Heats ONLY when using self-contained battery pack. Just connect the two plugs and heating begins. Heats for 5 to 7 hours. Heats to about 115 degrees. Full heating in 15 to 20 minutes. Best Performance: when sat on continuously by a human posterior. Uncovered cushions cool down. Internal Bench Warmer rechargeable batteries never need replacing. Included: Charging adapter with 6 foot cord. No batteries to change nor heating packs to buy. UL Listed Self contained NiCAD battery, 14.4 volts, 2.3 milliamps. Lightweight: 2.4 lb. Limited Lifetime Manufacturers Warranty: If your seat cushion failed to hold a charge, the manufacturer will replace it..