Solvit Deluxe Tagalong Booster Seat For Large Dog rat bait A built in thermal safety switch A built in thermal safety switch accurately regulates the temperature to within 1 degree Cool Bed Large 37 in X 48 in We re now keeping pets cooler than ever with the new Cool Bed III No electricity is required to operate the Cool Bed III and these beds are attractively designed and allow a cool spot for dogs Simply add the recommended amount of water through the easy fill cap and adjust the comfort with the easy air valve Our unique Cool Core diverts the liquid better than ever throughout the bed for advanced cooling power The new nylon vinyl exterior is tougher than ever providing an unobstructed view and more comfortable ride for pets with no clumsy straps to get in the their way Installs securely in one minute and even works in the back seat (requires headrests)