An ED ring, also known as a penile ring or constriction band, is a simple yet effective device designed to help men maintain firmer erections. It works by restricting the flow of blood from the penis, ensuring that blood stays in the erectile tissue for a longer period. This restriction allows for a more sustained erection during sexual activity. The best ED ring is often made from soft, flexible materials like silicone or rubber, making it comfortable to wear while maintaining effectiveness.