These training pants have a waterproof fabric on the outside and have an extra absorbent padding. These pants are waterproof and extra absorbent. The outer shell is a very soft waterproof fabric. It is not vinyl or plastic - it is fabric, so it feels very nice to touch. The inside is lined with a layer of very soft absorbent terry fabric. The middle layer is padded with fiber sponge for super absorbency. They have two sets of snaps, so they are adjustable to fit as needed.