Trap your slaves penis so that he can not touch it or achieve an erection This innovative chastity device includes an internal locking system so that all you need are the cage, the ring, and the keys The sizes of rings allow you to find the perfect fit to go around your submissives shaft and scrotum, or start out big and work your way down to the smallest to watch him squirm The shape of the rings makes them sit comfortably against the body. A cum-through hole at the tip ensures that he can wear this device for long periods of time, allowing him to use the bathroom while wearing it. The plastic locking system is great for travel and avoiding embarrassing moments going through security Measurements: Inner cage length of 2.25 inches, with a 1.25 inch diameter. Small ring has an inner diameter of 1.9 inches. Medium ring has an inner diameter of 2.1 inches. Large ring has an inner diameter of 2.3 inches. Material: TPR, ABS, metal. Color: Clear. Note: Includes rings in 3 graduated sizes and two keys.