Pellon 805 Wonder-Under 17″ x 10 yards Bolt. Color: White. Fiber Content: 100% Polyester. Application Method: Fusible. Wonder-Under is the original paper-backed fusible web. It fuses easily in mere seconds and is 100% machine stitchable. The fabric will maintain a soft hand after fusing. Wonder-Under is great for apparel, home dcor, and craft projects. It bonds fabric to fabric or any porous surface like wood and cardboard.