Increase stamina and enjoy harder erections with these strong. tear-resistant elastomer cock rings. Includes 2 Soft and Stretchy Cock Rings: Wear One or Both Together. Made from TPE. Contains No Fragrances. Phthalates. Paraffins. or Latex SIZE - 0.7 Inch Inner Diameter x 1.4 Inch Outer Diameter (Each Ring) Play stronger and longer with Stay Hard Donut Rings. These thick. durable C-rings are super-stretchy for comfort. Wear one ring around the base of the shaft or both rings at once. around shaft and balls for extra stimulation.