Each pad features Polyethylene backing with a border to protect the floor by blocking leaks. The polymer layer absorbs liquid and turns into a gel for easy clean-up. Keep your home cClean and without odor. Can be used for all kinds of dogs including new puppies or seniors. Perfect for Male and Female dog potty training, sick dog recovery, longtime stays at home, and traveling. Designed with 5 premium inner layers to protect dogs or puppies from stains in kennels. Super absorbent polymers are designed to turn urine and liquid into a mess-free gel to help protect the carpet and hardwood floors from accidents, stains, or odors when training indoor puppies or dogs. Can be used on their own, in a puppy crate, or even as a liner.