Body Glove Pet Warmer Heating Mat (Pressure Activated with Chew Resistant Cord) Pressure Activated Body Glove Warming Mat for Dogs or Cats. Measurements: Small 12 Inch Diameter, Medium 16 Inch Diameter, Large 20 Inch Diameter Automatically Turns On When Pet Lies Down & Turns Off When Pet Gets Up Set to Constant 102 Degrees Veterinarian Recommended Temperature Includes Removable/Washable Soft Neoprene Cover, Chew Resistant Cord, and AC Adapter Multifunctional: Use Mat on its Own or Place Under Existing Pet Beds, Easy to Roll Up for Trips