DESIGNED FOR PETS: When placed inside your pet's bed, this low-wattage pet bed warmer automatically adjusts to the optimal temperatures for pets; unlike human warmers that can harm pets USAGE: Indoor pet heating pad provides extra warmth for your pet in their favorite pet bed, simply insert the warmer into their bed to create a cozy heated cat bed or heated dog bed; Please note this warmer is not designed for use in outdoor temperatures PET-ACTIVATED HEATER: When placed inside a pet bed as instructed, the smart thermostat warms the bed only when your pet is in the bed; when the bed is empty, the surface stays at or just above room temperature—so it won’t always feel warm to the touch IMPORTANT: ALWAYS place inside a pet bed; It is recommended to have a minimum of ¼ inch of padding between your pet and the warmer; if your padding is too thick or not breathable (such as towels / heavy blankets), the bed surface may not get warm SMALL SIZE: The Small Pet Bed Warmer measures 9¼" x 10¼", uses only 4 watts of power, and should always be used inside a pet bed; small size is recommended for round or square beds that are 20in or less - place in center of bed to warm your pet's core 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 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