Neon Colors Polyester Embroidery Thread 6 Spool Set - Threadart Neon color 6 spool set of our most popular polyester embroidery thread. This 40 weight polyester thread has excellent tensile strength and color-fastness. We are confident you will be delighted with its strength and performance. Polyester thread is a great choice for today's sophisticated computerized sewing machines. Includes neon pink, neon yellow, neon green, neon coral, neon flamingo, and neon orange. 1000m spools.