I ordered both a medium and large in this style and ended up keeping both sizes. The large fits comfortably, especially on days I'm feeling a little more puffy -- but the medium are comfortable as well. Both provide great bum coverage where I'm not constantly yanking them out, but not too modest, that I feel like I'm wearing something my grandmother would prefer. Material feels great and dries quickly -- after a quick rinse in the sink I was easily able to wear them again the next day while on vacation, having only hung them on my lanai overnight, with zero dampness. The waist stays put and doesn't roll down on either size, as well.

Net/net -- these are a winner.