HEATED CAT BED: This indoor heated cat and dog bed features 6 inch tall soft foam walls for your cat's comfort, making them feel secure while the bed hugs your kitty PET-ACTIVATED HEATER: A smart thermostat warms the bed only when your pet is inside; when the bed is empty, the surface stays at or just above room temperature—so it won’t always feel warm to the touch, but will warm your pet perfectly when in the bed ENERGY EFFICIENT: Heated cat cup is low wattage and extremely energy efficient; the thermostatically controlled 4 watt heater is removable for use in all seasons SIZING: The K&H Thermo-Kitty Bed heated cat bed is available in two sizes; Small 16" is great for pets under 15 pounds; Large 20" is purrfect for pets over 15 pounds MACHINE WASHABLE: K&H Thermo-Kitty Beds feature a removable cover for easy wash and care SAFETY LISTED: K&H products are safety certified, providing peace of mind with electrical safety standards that go beyond UL requirements; K&H doesn't just use safety-listed parts, we safety certify the entire product, ensuring unparalleled safety HOW IT WORKS: This heated bed may NOT feel warm to the touch when your pet is NOT in the bed; it emits a small amount of heat when not in use (pets can sense it), but only warms to max temperature when your pet is using the bed – see “How to Test” image COLORADO BRAND YOU TRUST: Designed by K&H with 25+ years of experience in creating safe, innovative, quality products for pets, ensuring safe reliability and top-tier craftsmanship for pet parents