I purchased the Ribbed Swim Poolside One Piece - Parasailing in a size M. The fit is perfect and the material is good quality. I would call this bathing suit quite modest but flattering. You can walk around in this suit without thinking about anything rearranging itself...such as the butt-covering riding up. For the zipper If you don't have it all the way up, it can sneak itself down if you don't pay attention. I found this out when I was doing laps in the pool and the zipper started to unzip. I am fairly small chested so if you have a bigger bust just pay attention to it if you are doing something active. I just zipped it up all the way and the problem stopped. Very happy with my purchase, love the color, and I wish Tomboy X made more one piece swimsuits.