The Curve Male Chastity Device is designed for the larger male. The Curve is updated with rings that consist of three interlocking pieces that fit together like a puzzle. The two guide pins hold the top pieces together. The oval locking pin goes through the middle recessed hole connecting the cage portion to the ring. The flat design of the rings is extremely comfortable and secure. Numbered plastic locks allow wearer to go through metal detectors without setting off alarms. The Curve is made of medical grade polycarbonate material. It is lightweight, hypoallergenic and durable. The cage portion is vented for hygiene and has a bottom opening allowing use at urinals. The different size rings and spacers included in each package allow you to customize your fit to your individual needs. The Curve restricts you from touching your genitals for sexual pleasure and gives the Key holder control over the sexual fulfillment of both partners. 3.75 inches length, 1.5 inches inside diameter cage. Five inside diameter ring sizes: 1.5 inches, 1.625 inches, 1.75 inches, 1.875 inches, 2 inches. Package includes: 1 cage portion, 5 different size rings, locking pins and spacers, one brass padlock, five individually numbered plastic locks, and handy black zippered carrying case.