Color:Black These thick Silicone rings can be used together or individually. Once they re comfortably around the base of your shaft or balls, they gently restrict blood flow to help achieve the biggest, thickest, and most intense erections. The ring`s tight squeeze will put a clamp on embarrassing midway performance letdowns. Try the rings in different combinations to find the most explosive results. Use both rings at the same time for the ultimate stamina test.