Complete Package Contents: Comes in an original and discreet package with 1 tube, 4 rings, 1 Magic Locker (high quality) and 2 keys Durable Material Construction: Made from high-quality resin materials for long-lasting use and reliability Compact Tube Dimensions: Length of the tube measures Small 48mm (1.89inch) for comfortable wear Interior Tube Specifications: Inside diameter measures Small 34mm (1.34inch) to ensure proper fit Ventilation Design Feature: Numbers of air vents: 3 strategically placed openings for breathability and comfort Multiple Ring Size Options: Equipped with 4 rings in varying diameters - 36mm, 40mm, 45mm, and 50mm to accommodate different sizing needs Secure Locking Mechanism: Includes Magic Locker with 2 keys for secure fastening and safety