This innovative cock and ball duo ring from BRUTUS has a ‘Yin and Yang’ design; where one hole is intended as a cock ring and the other as a ring around your scrotum. Made of silky soft liquid silicone and is very sturdy, so it firmly holds your cock and your balls nice and warm. This ensures a harder and longer lasting erection. Because it is stretchable, it always fits and does not pinch. Dimensions: Yin and Yang hole are 18 x 40 mm each. Thickness of the material 18 mm. Total outer diameter of this ring 76 mm.