The Advance Housebreaking pads for Puppies and Dogs features super absorbent polymer and plastic backing, so there will be no worries about leaks. Super absorbent crystals absorb 100 times their weight, and transform liquid to solid gel immediately. The pads are also scented to attract puppies for elimination. The advanced Wet Check technology causes the pad to turn blue when it is wet. Perfect for puppy training, each pad is 23" x 24". The pads come in four sizes of package; 7 pack, 14 pack, 30 pack, and 50 pack.