I was reluctant to try this due to the narrow waistband and the small "volume" of the garment, a pak of three was a small thin package. Compared to a "normal athletic supporter" (such as the Bike-10) this seemed it would be inadequate.  I purchased the first pack after finding a very good discount.  I was actually shocked at how comfortable it is, and how well it "works" as a jockstrap.  It never gets "bindy" from the narrow straps, they stretch well and don't curl up, yet stay in place inspite of lots of body movement, even when under shorts or jeans that need to be "repositioned" or pulled back up fairly often. The pouch is a smooth cotton fabric and does not cause that waffle iron pattern (painful on long term wear") that "normal" supporters cause.

I wear a lot of compression shorts as underwear or light compression bike length briefs, some of which tend to be pulled down slightly due to the long tight legs, this causes them to lose the support of my "package". UnderArmour Compression Briefs are really bad about this, after walking or moving around just a little, they pull down a little, maybe an inch at the most, but it is enough that they no longer have the supportive comfort on the "package" that they did when I first put them on.  Using one of the Papi Jocks under these shorts/briefs is a perfect solution.  The Papi jock almost seems to disappear (except for holding the support) making it great to wear under the normal underwear briefs, and it would make wearing a boxer short tolerable for someone who normally needs a supportive brief.  It also works fine as the main underwear. The narrow thin and very stretchy straps of the Papi do not interfere with other clothing and they are not even felt under briefs, compression shorts, or jeans.  It's also very comfortable for sleeping.

Size seems about right to a little small, I usually wear size L in normal briefs, XXL in compression shorts, and prefer the XL Papi jock, but the L fits nicely also.  The only difference in size is the length of the waistband, and as narrow as it is, it wouldn't be a difficult job to use a needle and thread to make the waist shorter, or add a piece of material to make it a little longer if needed to get that "perfect" fit.  With a sewing machine, this would be a less than five min job.  This little jock is pretty high quality, like the majority of the Papi products.