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 decor and craft projects. It bonds fabric to fabric or any porous surface like wood and cardboard. Fuse detail areas including hems in denim, facings, applique, cut-work and monogramming. - Acid-free 100% Polyester - Sewing machine safe - Machine wash warm. Tumble dry low or dry clean. Do not use fabric softener.