The Exile penis cage keeps every penis perfectly in place. The metal chastity cage pushes the penis inwards so it is barely visible. The strong and durable metal feels cold and heavy for the ultimate sensation. Thanks to the integrated lock, the cage won't make any sound when you move around. The 3 O-rings with different diameters give the cage a perfect size for every use. Inner diameter rings: 3.8 cm, 4.3 cm and 4.7 cm.