Pronounced boo-Clay, this uniquely knotted thread is made with a 2 ply base with two other plies looping in and out making it a 4 ply thread. It comes 10.5 yards (10 meters) per skein. This highly textured thread is ideal for making decorative stitches with dimensional effects, never basketweave. Although it may appear to be a difficult and unruly thread to work with, it is actually quite tame and easy to use. Hint: Use a large needle like 20 or 22 which makes it easier to thread.