Superior Threads So Fine! is a 50wt 3ply polyester thread. Designed for quilting and sewing.

This is a fine, lint-free, matte-finish, smooth filament polyester thread. Due to its fine nature, it is an excellent blending thread and perfect for both longarm and domestic machine quilters. Each Cone has 3,280 yards. Excellent for Sewing, Serger, Bobbin Thread, and Quilting is a 50wt. 3-ply polyester thread designed for quilting.