CHENGYIDA 1 Spool Sewing thread for Jeans Sewing Machine 3000 Yards Industrial Polyester Jeans Sewing Thread 20S/3 - (jiang huang) 20s/3 high speed polyester jeans sewing thread Material: Polyester 20s/3 1914 yard /spool Gread for jeans canvas repair,or leather bag case making etc