Madeira Aerofil 120 Thread is an purpose, sew all, high-quality sewing thread for all fabrics and seams. Aerofil is made witha 100% strong polyester core. Suitable for stitching with the sewing machine and by handit has a high tensile strength and optimal sewing performance without fiber lint and seam crimping. Excellent sewing properties such as elasticity, strength, and glides through fabrics knot free.