Pellon 805 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. Acid-Free 100% PolyesterNon-WovenFusibleWeight: LightweightSingle SidedWashing/Drying instructions: Machine wash warm. Tumble dry low or dry clean. Do not use fabric softener.