Cock Rings. These rubber donut-shaped devices tightly encircle the erect penis. Typically used to help maintain erection, they also provide a small--temporary--size boost. Flaccid or erect, blood circulates in and out of the penis. One of the veins that carries blood out runs close to the organ's skin (on top). A ring restricts outflow somewhat by compressing this vein. Don't expect miracles. Any effect is modest and temporary.
Men who wish they had more stamina in the bedroom sometimes reach for male enhancement products. These products come in a liquid form and a tablet form that help men struggling with a healthy sex life. Choosing sexual enhancement tablets is a rough task because there are so many different types of products sold under this name. Walgreens.com offers male enhancement products from well-known brands as ExtenZe and Enzyte.