Our Paws Wee Wee Pad On Target Trainer features a patented design to teach your puppy where to do his business. A high three-sided wall keeps puppies centered on the pad and prevents messes from puppies who haven’t quite mastered their – ahem -functions. Keeps puppies centered on pad & protects floors & carpets Helps speed up housetraining by providing puppies with a “go-to” place Easy, convenient & efficient 4-piece construction The Wee Wee Pad On Target Trainer’s splash guard walls can be removed when your puppy gets larger or no longer needs the extra mess protection. Easy-to-use clips will hold any standard size Wee Wee Pad securely in place. Tray Size – 22.75″L x 22″W x 1″ HWall Size – 7″ High.