For extra thick results, the OptiMALE 35mm C-Ring is an ideal choice! Crafted from soft, stretchable silicone, it easily fits around the shaft or testicles, making it perfect for achieving optimal erections and prolonging ejaculation. Available in three sizes: 35mm, 40mm, and 45mm, you can collect them all! Choose from two versatile colors: Black and Slate; made from phthalate-free silicone.