Wanna increase the quality of your erection, and duration of your orgasm? Try the C-ring from Tantus. It's soft Silicone construction makes it both comfortable and flexible. It can be put on while soft or hard. Take your climax from 6 seconds to 45, on average. Use the C-Ring with another sex toy such as a butt plug, and heighten your ectasy!
Unstretched inside diameter: 3.8 cm
Stretched diameter: 12.1 cm