Madeira Premium Quilting Thread is core spun with 100% polyester filaments covered by polyester fibers. This process gives the thread strength to withstand the speed of longarm quilting machines. The matte, cotton like finish feels soft and familiar in your customer's hands. Even traditional quilters will love this strong new thread. It is 40 wt, 3,000 yds per cone, tested for quality and consistency, and environmentally friendly production methods.