Country Red Seraflex 120 130M/142YDS XSP Seraflex® is the perfect sewing thread for highly elastic seams on all elastic fabrics. Due to its innovative raw material PTT (37% renewable raw material) an elongation of approx. 65% is achieved, making all seams highly elastic. Seraflex® makes especially the straight stitch extremely stretchable, in the best case even a doubling of the seam elasticity can be achieved compared to seams with conventional sewing threads. Due to its extremely elastic properties, Seraflex® is primarily used for clothing, e.g. as sewing thread for women's, men's, and children's clothing, for sportswear and outdoor as well as for lingerie and underwear.