HEATNBOND Light Weight Non-Woven Fusible Interfacing is designed to reinforce delicate fabrics while adding gentle support to sewing projects. This white 50.8 cm × 0.9 m (20 in × 1 yd) piece is 100% polyester and works well with materials like silk, crepe, calico, challis, and lightweight cottons. Fuse it to collars, facings, waistbands, and garment details that need stability without bulk, then sew as usual and follow normal laundering.