For steep erections and more! Two penis rings made of stretchy, soft silicone. Each penis ring makes HIM 1 cm thicker and prolongs his erection through the blood congestion effect. In addition, the pronounced stimulation structure gives you and your partner additional exciting stimuli. You can choose between the blue penis ring with soft stimulating spikes (4.5 cm long) and the white penis ring with thick stimulating nubs (6.7 cm long). Each has a wall thickness of 1 cm, Ø 1.5 cm each (stretchable). Set of 2.