These are the easiest boots to put on a toddler that I have found..and I am on my third toddler. We haven't had a chance to use them in really cold weather but since we're in Minnesota I'm sure that's coming soon. The only issue I have with them is that the top is too narrow to put pant legs into and when the legs are put outside around the boot they tend to ride up due to the way the top gapes when he walks. I am still really glad that I chose the ones with the zipper because they are really easy to put on. Since he'll usually have snow pants on with these the riding up shouldn't be a problem when real cold weather hits.