Crafted from nylon, this nylon sewing thread optimal tensile strength and flexibility, making it suitable for both sewing machine and hand sewing across various skill levels Very suitable for enthusiasts, professional cobblers, and home users who is crafting unique shoes, bags, and other items the strength and durability with our Nylon Heavy Duty Upholstery Thread, ensures long time use for all your sewing project Enhancing your craft project with our upholstery thread, adding beauty and durability to creation, while ensuring smooth sewing that protects fabric from damage Widely used for shoe making and repair, this sewing thread caters to various items such as leather shoes, sneakers, and sandals, leather craft, thicken fabric, extending the life of your footwear and reducing replacement cost