The Permacore Quilters Edition is a smaller cone (3,000 yards). 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.