Made from pure silicone that creates a firm grip while warming to body temperature for a natural feel, Adonis Silicone Rings are sturdy, comfortable and ultra effective. Cock rings work by keeping blood in the penis once its erect, they can also help with endurance, since the slightly constricted sensation helps to keep the wearer under control. For whoever's on the receiving end, a ring can provide extra stimulation to the clit or perineum, since it'll add a little more surface area and extra texture. The Hercules version of the Adonis ring has 4 patches of intensely raised ribs at strategic points, it's extra stretchy and super smooth, plus, as mentioned, it'll warm to body temperature with use, making it feel natural for both partners. The high end pure silicone is extremely hygienic, with a nonporous surface that's very easy to clean and sterilize; silicone is also hypoallergenic and body friendly, perfect for anyone with sensitive skin. Use a good quality water based lube if needed with the Adonis rings to keep the material strong. Fits most.