These mats are handmade. They are approximately 16 X 20 and filled with cat nip. The kitties love rolling and playing on them until they wear out and fall asleep. These are machine washable and the cat nip lasts about 5 washings. Then you can either use the spray cat nip to refreshen or sprinkle cat nip on there. Sometimes by then they don't even care, they love it as a bed.