Self-heating cat pad made of soft plush fabric, designed to keep your cat warm. - Material: Soft 8r plush fabric - Feature: Warm-keeping design - Color: Light Brown - Size: Approximately 38cm (length) * 49cm (width) There is a zipper along the length, and an insulation sheet is inside. In my home, I didn't think this alone was enough, so I use a thin sheet-type electric carpet like the one in the second half of the photo inside. The sheet size is approximately 25cm (length) * 30cm (width). I bought it intending to use them in rotation because I was worried about leaving it on all the time, but I'm putting it up for sale to share with anyone who needs it. Please contact me if you would like to purchase it separately. Thank you for looking.