The Scruffs Cool Mat is designed to provide relief for your pet. Filled with a non-toxic gel the self-cooling mat will be typically 5-10 degrees cooler than room temperature. When in use, the mat will maintain its cooling properties for approximately 1hr depending upon the environment. To reset the mats cooling properties simply leave unused for 1hr, there is no need to freeze or refrigerate.The Scruffs Cool Mat can be used alone, with an existing pet bed or in a pet carrier. To clean the mat simply wipe the cover with a cloth and soapy water, then rinse with clean water before use. Available is three sizes, including x-large, the Scruffs Cool Mat is great for dogs that like to sprawl.