NS Novelties Firefly Halo Medium, 1 pc, Non-vibrating cock rings for Men, Spice up your love life and make your moments of pleasure last even longer. NS Novelties Firefly Halo Medium ring gently reduces the blood flow from your penis to help you get a more lasting, harder erection and postpone ejaculation. Characteristics: makes your erection harder, more intense and more lasting postpones ejaculation for an exceptionally long performance can be also used in the shower or bath handy and storable travel companion silicone How to use: Follow the instructions provided. This cock ring should be used with a water-based lubricant. Avoid using silicone-based lubricants.