Nubby vibrating ring for additional stimulation and massage of the rod. Put it on the root of the dick to stimulate endurance muscles and limit the blood flow. That will encourage your sensations at the tip of the cock and create additional desire to move even faster. Made of sturdy ABS plastic, the ring will definitely stimulate, not just tease you. The vibrating micro bullet is fully removable if she or you need to have rest of that intense exultation. EZ push button is specially designed to allow better control over the pattern while moving. Safe and anti-allergic substances only.