Sewing thread Top stitch Seralon 30 100% Polyester Amann Mettler 6675 €1.99 For ornamental stitching and topstitching, decorative stitching and handmade buttonholes.Silk-like sheen, soft and supple, tear and abrasion resistant. Colourfastness, light fastness.Oeko-Tex® Standard 100Buttonholes, 30 metres, 33 yards. View