I bought this with the au natural 4.3” circumcised packer and it fits great. It’s very discrete and hugs my body in a really nice way and is very comfortable to wear all day. It really feels like part of me, the design of the tabs inside the circle hold the packer perfectly and allow the shaft and scrotom to move around and also “flop” around while im exercising in gym shorts. It looks great under briefs, boxer shorts and boxers. Wearing it under sweat pants and PJs is also very pleasant. I’ll be ordering a few more pairs now that I see what a great quality it is. I also LOVE the open back and the design is such that it’s easy to use the rest room without having to undo straps or snaps like some other designs. Very great product