3768HS CB-3000 Style Male Chastity Device Set The CB-3000 is sized mid-way between the CB-2000 and The Curve. It represents the natural lines of the penis. This clear chastity is completely transparent which makes it very intriguing while worn. The slope makes it virtually undetectable under clothing. The material is a highly durable polycarbonate, vented with slots for hygiene when bathing. The cuff rings are hinged and close together like a claw.