Features: - This training pad is suitable from small puppies to medium dogs. - Our training pads are made with 5 layers: non-woven cloth as the first layer to allow urine to flow through; the second and the fourth layers are made from paper tissue to add absorbency; the third layer is also the core layer is made from super-absorbent polymer, and the back layer is a water-proof plastic protecting layer. - With a super-absorbent core that can lock in moisture by instantly absorbing and turning liquid into gel, each training pad can hold up to 3 cups of water. This product also featured with plastic back and border to prevent any leaking. - With a built-in attractant that helps direct your dog to the pad, which could help you achieve a successful housebreaking, absorb odor and pet urine, protect your expensive hardwood and carpet. - This product can be placed at home when you are outside, or in dog crates when traveling. Size: S（12.99*17.71 Inches） M（17.71*23.62 Inches） L（23.62*23.62 Inches） Notes: - Due to manual measurement, please allow an error, thanks. - Due to light and computer monitors, the displayed color may be slightly different from the actual product. - Wish a happy shopping experience, please contact us in time if you have any question or suggestion.