Signature 40wt. , 3-ply. 100% mercerized cotton thread is the perfect choice for those preferring cotton through and through. With excellent sewability at high-speeds, this thread performs well on both long arm and home quilting machines. The mercerization process produces a lower lint, higher luster cotton product. This thread is the perfect choice for those purists preferring cotton through and through. The three-ply, long-staple fiber construction, combined with the mercerization and finishing processes this fiber passes through, all contribute to the superior strength, luster, and low lint properties of this high quality thread. Whether youre using free motion techniques, high speed multi-directional designs, or just doing general sewing, youll enjoy excellent sewability on both long arm quilting and home sewing machines.