So Fine! by Superior Threads
50 wt. 3-ply polyester thread. Designed for bobbin thread, quilting and sewing.
So Fine! is a lint-free, matte-finish, smooth 50 wt. 3 filament polyester thread. Sure to its fine nature, SO Fine! is an excellent blending thread and loved by both longarm and home machine quilters. Available in 134 colors. (Not all colors are in stock but all are available.)
So Fine! also makes a wonderful bobbin thread.