This is heavy duty sewing thread.
Used for applications such as:
upholstery, drapery, beading, luggage, purses, wallets, shoes, leather, vinyl, and more.
100% nylon is a tough fiber that is resistant to chemicals, abrasion and sunlight.
Bonded Nylon is the popular choice to use when stitching upholstery, leather, vinyl, heavy fabrics and more.