If you own an older car or your vehicle wasn't ordered with heated seats (at $500+ it's an easy option to pass up) here's a solution that'll warm you up. Installation is easy. Simply slide the heater pads under your seat covers and plug them in to your 12V accessory socket! You'll get two sets, so, most importantly, your copilot will be warm and happy, too. The underside of the pads is a grip material with webbing straps to keep them in place on the seat bottom and seat back. The bottom pad measures 9 3/4" x 11" and the seat back portion measures 9 1/2" x 8". Provides a safe, constant, self-regulating temperature and features independent control via a two-button switch built into the 12V plug. These are not designed to sit directly on top of, so you will need seat covers. (They'll protect your seats and keep your vehicle looking new.) Works in the front or rear as long as the 4' power cord can reach a 12V socket. A great addition to our Custom-Fit Seat Covers or Seat Glove Seat Covers! Plus, you can take these with you to the next car. Made in the U.S.A.