I was hesitant to purchase these shoes for my daughter given that one of the reviews complained about a sticky zipper. Since the other review made no mention of it, I decided to take my chances. I really liked the styling and thought the zipper was a good option for my daughter, who is 7. Well, when they arrived, the zippers were indeed sticky. One shoe wasn't as sticky as the other one so upon further inspection, saw that it was extra glue residue from the seams that was making zippers sticky and not so much a design flaw. So, this was just bad quality control. Instead of returning them, since they looked nice on my daughter, I opted to remove as much as the glue residue as possible. I didn't remove it all but I removed enough so that it's not so hard to zip and unzip the boots. Hopefully with use, the glue will dwindle. If you don't want to work so hard on glue removal, I don't recommend these boots. Other than that, my daughter really likes these boots and they kept her feet warm. It was in the teens today and she had no complaints of cold feet.