Advance training pads have unique, super absorbent crystals that transform liquid to a solid gel in seconds. The activated crystals absorb over 100 times their weight making it safe to leave your pet alone for extended hours. The specially designed quilted pattern locks in moisture, and helps to prevent tracking of urine. Lightly scented, these pads naturally attract puppies, and the 5-step training system detailed on the package helps to simplify housebreaking. Excellent for puppies, extended stays indoors, traveling, incontinent and senior or ill dogs, these pads feature advanced Wet Checkâ„¢ technology, that turns the pad blue when wet. Each fully disposable pad measures 22 1/2 x 23 1/2" and has a plastic backing to help protect flooring. To prevent sliding on tile and hardwood floors use with our convenient Advance Housebreaking Pad Frame ."