These pads are made of a combination of absorbent materials, polyolefins, adhesives, and a silicone-coated paper. The top layer is a non-woven polyolefin cover sheet. The absorbent materials consist of chlorine free wood pulp, and Lysorb, an absorbent gel. Lysorb, also known as SNAP (super absorbent natural polymer), is a polysaccharide derived from wheat. Polysaccharides are complex sugars found in many natural substances, like the fibers of cotton, wood, and wheat.