Mettler Seraflex 100% PTT Elastic Thread

Seraflex is a sewing thread designed to give excellent elasticity on all stretch fabrics. Its PTT composition, made with 37% renewable raw material, provides a smooth, resilient thread that allows seams to move comfortably with the garment. When sewn with a straight stitch and reduced tension, Seraflex can offer up to twice the stretch of seams made with conventional threads.

It is well-suited to women’s, men’s, and children’s clothing, along with sportswear, outdoor wear, lingerie, and underwear. Seraflex is an ideal choice wherever flexibility, comfort, and long-lasting performance are required.

Although Seraflex is measured in Tex rather than thread weight, its thickness is closest to a traditional Fifty Weight sewing thread, making it familiar and easy to use for everyday garment construction.

Each spool contains 130 metres. Recommended needle sizes are 70/10 or 80/12, using a Universal, Jersey, or Stretch needle according to the fabric.