AmazonBasics Pet Training and Puppy Pads Each pad measures 22x22 inches (LxW), with the center pad measuring 19x19 inches (LxW). The pad has a 1.5 inch plastic border on all sides to prevent overflow. Super-absorbent core that turns liquid to gel upon contact Leak proof with plastic lining to prevent damage to floors Quick-dry surface with built-in attractant Great for training puppies, assisting aging dogs, or as an alternative to the outdoors for indoor dogs Regular size training pad is intended for puppies and small dogs only, medium-large sized dogs should use the AmazonBasics Pet Training Pads, Extra-Large