Wow after rings that not only failed to fit, but didn't stay snug enough to do the job, this product is everything Dr. Joel claims! I was very pleased with the obvious ease of design for installation and removal, and the way constructed made it easy to snug and comfortable without pinching. Best part is the results were quickly visible with increased vessel presence and *********** which over time is making me have both a better ******** as well as a more noticeable one! Through repeated usage one will definitely build more girth, have a more vivid appearance and actually improves my prior slow to rise. Thanks Dr for a better rise!