COATS&CLARK-Extra Strong & Upholstery Thread.Upholstery Nylon is a heavyweight 100% nylon thread for machine and hand sewing indoor and outdoor heavyweight fabrics.It is a bonded 3-ply nylon thread that is weather, abrasion, mildew and UV resistant.For best results use a size 18 needle and increase stitch length.This package contains one 150yd/137m snap spool of thread.Available in a variety of colours: each sold separately.Imported.