Seraflex elastic thread is the perfect sewing thread for highly elastic seams on all your stretch fabrics and jersey knits. Seraflex is specially formulated for use on your home sewing machine. It is made from PPT, a material that has been specifically designed to stretch up to 65% of its original length, almost twice as much as conventional sewing thread. All seams sewn with this innovative thread are highly elastic and allow you to sew your stretchy fabrics using a straight stitch instead of a zigzag or ‘jersey’ sewing machine stitch. Due to its extremely elastic properties Seraflex stretch thread is ideal for clothing such as sports and outdoor wear as well as lingerie and underwear.