With three super-stretchy silicone rings to choose from, this trio is the perfect assortment to help achieve your maximum potential. Made from Elite Silicone, the three performance rings range from 1 in.(2.5 cm) to 1.38 in. (3.5 cm). Put one around the base of your shaft to gently restrict blood flow and help you achieve a larger and more intense erection. Try the rings in different combinations or use all three rings at the same time for the ultimate stamina test.