Check the listing for details. Tex 40, 45, 50 General Purpose Thread Perma Core/D-Core/MagicPolyester. Condition: New. Listed at 4.50 USD. Fiber Type: Polyester Core, Polyester Wrapped Cotton Finishes: Soft Thread Construction: Core Spun- Polyester Wrap Application: General - for sewing light and heavy weight garments Full Description: A&E‘s Perma Core® is a premium core spun sewing thread manufactured with a continuous filament polyester core and polyester staple wrap for most sewing applications. The core spun construction delivers a thread with a higher strength and sewing performance over staple spun products, allowing for the use of smaller thread sizes. Perma Core® maximizes seam quality while minimizing sewing problems. Heavily utilized as an all-around industrial apparel thread, Perma Core® is regularly used in the sewing of denim, workwear, ladies wear, men’s wear, activewear, intimate apparel, swimwear, bedding and mattresses, and furniture among others.THE T40 EXCELL OFF WHITE 6,000 YDS. HAS THE WRONG LABEL (NATURAL). PLEASE BE ADVISED...IT IS NOT NATURAL BUT AN OFF WHITE COLOR, NO PROBLEM WITH THE QUALITY OF THE THREAD.ATTENTION: THE T40 MAGIC IS A POLYESTER AND HAS A SHEEN APPLIED AND CANNOT BE RETURNED!! PLEASE BE AWARE OF WHAT YOU ARE BUYING. IF YOU'RE NOT FAMILIAR WITH THE MAGIC, I CAN SEND A SAMPLE WITH A SMALL FEE OF SHIPPING.