Variety is yours with this set of 3 doughnut-shaped stamina rings from Tracey Cox. Each different sized ring is super-stretchy, squishy and body-safe, and can be worn individually or all together for varied sensation and stamina. Suitable for beginners. "Slip one of these on for a harder, firmer erection. It may also help you achieve more intense orgasms." Tracey Cox Ultra-thick and spongy, each penis ring (also know as cock rings) provides a snug fit for an instant erection boost, while the flat internal edge ensures play is comfortable. Choose between the 3 different sizes for contrasting tightness and intensity to suit every size and mood. Wear individually, or experiment by combining 2 or 3 rings together to discover new levels of staying power. Before play, always add a happy helping of water-based lubricant to the ring and yourself to help it slide down the shaft smoothly. Includes a step-by-step guide written by Tracey Cox on how to make the most out of your male performance-enhancing toy. Ring measurements: Largest: Outer Diameter: 2 inches Inner diameter: 1 inch Middle: Outer Diameter: 1. 75 inches Inner diameter: 0. 85 inches Smallest: Outer Diameter: 1. 5 inches