Function: Sex Delay Cock RingColor: Black/Blue/Golden/Silver/RedS:Inside Diameter: 4 CM/1.6 inchM:Inside Diameter: 4.5 CM/1.8 inchL:Inside Diameter: 5.0 CM/2 inchHeight: 1.4 CM/0.55 inchThickness: 0.8 CM/0.31 inchMaterial: AluminumFurther: Lightweight