Gutermann Extra Strong Polyester is a 100% polyester sewing thread that offers a high break point that is engineered to cope with highly stressed seams. This versatile thread is ideal for anything that needs to endure a lot. From sewing heavy fabrics like denim and canvas to repairing tents, backpacks, or upholstery Gutermann Extra Strong Polyester Sewing Thread delivers unparalleled performance. It's perfect for both hand sewing and machine sewing, and its consistent quality ensures beautiful and durable seams every time. Applications Heavy-duty sewing projects: Perfect for sewing denim, canvas, upholstery fabric, leather, and other heavy materials. Repairs: Ideal for patching tents, sleeping bags, backpacks, tarpaulins, and similar equipment. Upholstery: Provides strong and durable seams for furniture upholstery and repairs. Decorative stitches: Use it to create prominent and robust topstitching. Leatherwork: Suitable for hand and machine sewing leather where extra strength is required. Buttons: Perfect for securely attaching buttons that need to last. Main Features 110 yd. (100 m) length Extra strong sewing thread Unique manufacturing technology with Micro Core Technology® For heavily stressed seams Particularly robust and tear-resistant Closing and top stitch seams Use with Universal Needle NM 90 - 110 100% polyester