3 Silicone Ring Set sizes: Small ring 1 inch, Medium ring 1.3 inches, Large ring 1.6 inches. 100% Top Medical Grade Liquid Silicone. Super stretchy. Only use a water based personal lubricant. Never a Silicone Based Lubricant. Always clean before and after use. Please note shown on a dildo for how to use and wear rings. Not included.