This heating technology provides your pet with immediate warmth, leaving them happy and comfy for hours! The Power of Minerals! The Crazy Warm Pads contain a natural occurring mineral that acts as a conductor when it comes into contact with body heat — taking “warm” to a whole ...This heating technology provides your pet with immediate warmth, leaving them happy and comfy for hours! The Power of Minerals! The Crazy Warm Pads contain a natural occurring mineral that acts as a conductor when it comes into contact with body heat — taking “warm” to a whole new degree! This self heating pad has patent pending Stay Calm Warming Technology - tourmaline Powder triggers a warming effect causing a calm and restful feeling! Tourmaline is said to reduce the pain of arthritis and muscle strain! For added comfort, pad contains dense memory foam! Great for travel! Specifically designed to fit most crates! Size 30" x 20" x 1.5" Cats love the Crazy Warm Pad too!!! Care Instructions: Hand wash with cold water and a mild detergent, reshape and let air dry.