The cloak can be made in every possible shape with just about every type of fabric. The most common forms are a circular piece of fabric with a hole in the center for the head, and fabric draped from neck, connected by a chain, brooch, cord, or pins. Talented drow weavers have woven strands of adamantine into the cloak, thus rendering it useless if exposed to the light -- the effect of which will turn the cloak to dust.