The Summer Infant Piddlepad Waterproof Seat Liner is a new innovative protector for car seats & buggies & has been specially designed for toddlers who are in the process of potty training. The Piddlepad Waterproof Seat Liner absorbs soiling & prevents staining & the terry cloth material is soft on your little ones skin. The Piddlepad from Summer Infant is machine washable & can fit into most seats or harnesses.