Madeira Variegated Thread 100% colorfast, Polyneon colors remain brilliant even after repeated exposure to sunlight, chlorine, and washing. The durability and strength of this 2 ply 100% Polyester filament thread allows it to resist abrasion and eliminate breaks during high speed embroidery. Polyneon colors come in 440 yd/400 m Perfect Spool, double the thread of our standard Smart Spool. A typical embroidery design contains 6,000 stitches. This means each Perfect Spool with its 80,000 stitches per spool will produce 80 designs on average.