Amazingly adjustable with a quick release ideal for first timers and low stretch makes it a superb restrictive cock ring. The ball rope works in synergy with the ball guide to allow easy adjusting of the ring while in use. The .2 of an inch increments are designed so that every man can get the perfect fitting ring. Features 17 increments of adjustment (13 readily usable). Measurements: -Smallest: 1.2 inches -Largest: 2.5 inches