The belt closure makes this ball stretcher so versatile that it can easily fit a variety of ball sack sizes. Once it is locked on tight, I can literally lead by slaves around by their balls, or attach a weight and let gravity take its toll. -Mistress Isabella Sinclaire This 4 piece set includes 3 adjustable scrotum harnesses, made of an easy to clean and durable PU leather material. The leash has a simple snap hook closure with wrist loop and plenty of length to control or lead your subject. You can even attach weights, ropes, or other accessories as you desire. The metal is nickel-free to prevent irritation and the material wipes clean easily. One of the most sought after Dominas in the world, Isabella Sinclaire has been a pillar of the fetish community and a fetish icon since 1993 and one of the first Pro Dommes with an online presence. She is a revered expert with an unparalleled knowledge on all types of BDSM activities and a deep understanding for those that participate in them. Isabella Sinclaire is also an international film star that has created or starred in over 60 BDSM films. The Isabella Sinclaire Signature Collection features exceptionally crafted tools of the trade, personally hand-picked by Isabella Sinclaire for your satisfaction. Each piece reflects her style, sophistication, skill and class. Measurements:Small: 1 inch in diameter Medium: 1.5 inches in diameter Large: 2 inches in diameter. Leash measures 37 inches in length