100%high tenacity polyester filament sewing thread is made from high tenacity polyester filament yarn .It can be used for sewing leather ,shoes and so on . specifications: 150d/2,150d/3,210d/2,210d/3,210d/2x3,250d/2,250d/3,280d/2,280d/3,420d/2,420d/3 ETC