Leather is really abrasive on fiber, so the wax helps keep your thread from fraying. Waxed threads are stronger and stiffer than unwaxed thread while retaining most of the thread's smoothness feel and vibrant color. This thread can sew anything that can be sewn with waxed nylon or polyester strings. For example: Leatherwork, awnings, sails, shoes, saddles, bags, brief cases, gun cases, and luggage, etc.
Flat Waxed Thread for Leather Sewing - Leather Thread Wax String Polye – MudraCrafts
Round Waxed Thread for Leather Sewing - Leather Thread Wax String Polyester Cord for Leather Craft Stitching Bookbinding by Mandala Crafts 0.45mm 219 Yards Red
Flat Waxed Thread (Beige) - 284Yard 1mm 150D Wax String Cord Sewing Craft Tool Portable for DIY Handicraft Leather Products Beading Hand Stitching
Flat Waxed Thread for Leather Sewing - Leather Thread Wax String Polye – MudraCrafts
Eboot 260m 150D 1 mm Leather Sewing Waxed Thread Cord for Leather Craft DIY (Beige)
Waxed Thread, 328 Yards 150D 1MM Leather Sewing Waxed Thread for Leather DIY, Bookbinding, Shoe Repairing, Leather Projects (Beige #002)
JANYUN 264 Yards 150D Leather Sewing Waxed Thread Cord for Leather Craft DIY 1mm Diameter 8 Colors Sewing Thread Cord,Each of 33 Yards (Color A)
Leather is really abrasive on fiber, so the wax helps keep your thread from fraying. Waxed threads are stronger and stiffer than unwaxed thread while
Flat Waxed Thread (Army Green) - 284Yard 1mm 150D Wax String Cord Olive Drab Color, Sewing Craft Tool Portable for DIY Handicraft Leather Products
Flat Waxed Thread for Leather Sewing - Leather Thread Wax String Polye – MudraCrafts