I like to wear this under jeans, shorts, and swimwear with the wider side hugging under my balls and the narrow part over the base of my dick. It pushes my entire package forward and produces a great looking bulge. The design of the product makes it undetectable under most clothing, and it creates a very natural looking bulge. It's very comfortable to wear and provides support for your nuts which makes it totally unnecessary to wear any underwear with it. Great for wearing under snug-fitting swimming briefs at the pool, keeps your junk "up front" while still maintaining a natural looking and very masculine appearance with a nice manly bulge that isn't overly extreme or obscene looking.
Also can be fun for sex-play by wearing it "upside-down" which pushes your nuts down and back between your legs for cbt type sexual activity with a partner. When worn this way it also forces your dick to point downwards, somewhat similar to a male chastity device.