We designed our flexible frame-based design to operate with pad dimensions ranging from 20″ to 32″ and any size in between. For all disposable absorbent dog pads, Pad Genius can enable longer-lasting usage with no leak-over.NO LEAKOVER – It is a frequent fallacy that when urine is detected under a pad, it has “leaked through.” Urine discovered under the pad can be from edge leak-over unless there is a rip or hole in the bottom layer. Capillary action draws urine back under the pad once it has passed over the edge.PERFECT FIT – Unlike other pad holders, this one fits pads of the same basic form and size as the holder. PADS REMAIN IN PLACE -….. Pad Genius incorporates pad grips and anti-slip feet on all four corners to assist hold the pad in place on the floor. Pad Genius can also help you save money if you pay extra for pads with sticky strips. PUPPIES WHO WISH TO PLAY WITH PADS WILL STILL BE ABLE TO DO SO IN THE HOLDER. THEY MIGHT ALSO BE ABLE TO REMOVE THE PAD FROM THE HOLDER. NO TRAINING REQUIRED – Unlike other pad holders, there is no need to educate your dog to stand on or within a pad holder if he is already using disposable pads. Many dogs like standing on an odd feeling/sounding structure to pee, especially if they are already utilizing floor pads. Pad Genius permits the whole absorbent surface of the pad to rest flat on the floor, like it should. (Seller’s Note: Open Box)