A toy lead is also known as a string lead and is meant for breeds under 6 pounds. The string lead thickness is 1/8" with a length of about 4'.  
This lead are used as an all-in-one-type lead with a neck loop, a bead to slide down to tighten around the neck, and a swivel so the lead will not twist up if the dog turns.  This type is detachable, and the lead has a small lobster claw clasp to attach to the neck piece easily.
This type come in a slip, kindness, martingale or martingale/kindness.
I do have colored crystals, they do not catch light as much as the clear, which I normally use.  If you want colored crystals instead of clear, ask me first if I have that color in stock before you order.