Thepenis ringis the most straightforward couple's toy: it tightens at the base of the penis for a harder and longer-lasting erection, while thevibrating ringadds clitoral stimulation for the partner during penetration. Thecockringrequires no technique, just wear it, turn it on if it's vibrating, and it works. From soft silicone tocock ringsthat are rigid, each format meets a different need.