Guterman Extra Strong thread is designed for heavily stressed seams, like on jeans, and can be used for rugged repair work. Heavy woven, leather and canvas are the perfect match for this thread since it is tear resistant and can stand up to heavy thicknesses. Great for use on many home décor projects like cushions and draperies. Guterman is high quality thread that is gentle on your machine and will not cause fibber lint accumulation that builds up over time affecting the machines performance.