The pleasure trio for impressive erections! Set of 3 penis rings with different nub structures and diameters (3 to 4 cm). The penis rings can extend the duration of an erection enormously thanks to their precise fit and at the same time provide strong vaginal stimulation. Also ideal for testicle lacing. Can be used individually or in combination. Made of highly stretchable silicone-like material: TPE, phthalate-free in accordance with EU Regulation 1907/2006/EC.