Dry-Seat Dry-Seat is softly padded, waterproof protection that keeps car seats and buggies dry. Whether it’s a wet swimsuit or a toilet-training ‘accident’, make travel more comfortable and stress free for everyone. Now you can have greater peace of mind knowing that your car seat is protected. It’s a ‘must-have’ for toddler training. This car seat protector provides a plush, waterproof cushion between your child and the car seat upholstery. Machine wash and dry.