I bought them for my 13 year old daughter to wear to a wedding and the zipper in the back made all the difference. Not sure it was mentioned in description when I initially ordered but I do see it listed now. I just know I never would've purchased them if i saw the zipper in the back. I'm thicker than a snicker and shes younger and thinner but is a little curvy. Disappointed but we loved them outside of that flaw because we couldn't zip over her bum.