Made of Polymer non-toxic materials,according to CE and ROHS standard *Powered by: 2 AG10 button cell batteries (Included). *The ring can be used with condom *One Size Fits most, Stretchy Silicone. *Use of product should be restricted to no more than 30 minutes at a time. *Can soak the cock ring in warm water before using for some extra heat. * Wash after each use with liquid, antibacterial soap and water. *People who are under 18 years old are forbidden to use it, * Don t put the vibration in water. *People with heart disease or hypertension are forbidden to use it. *Storing-- dry completely before storing. Try it!!! Shipping Will Be In A Discrete Package