Originally ordered a size 3 as my daughter wears a 2 1/2 shoe right now and they were HUGE on her! My sons Kamik Snobusters fit her great in a size 3 so I figured I would be safe. Ended up having to order a new pair and sized down 2 sizes to a 1 and they fit her great with room to grow.This is our 4th pair of Kamik boots and our kids have loved every pair! They have worn great and kept the kids feet dry and warm during our brutal MN winters.This is the 3rd or maybe 4th year we're buying Kamik boots for my daughter. She would not wear anything except these type of boots. She normally wear a size 3 in regular shoes and these were big on her. They actually fit my 5.5 adult feet without socks BUT with the thick socks she wears for winter, these are perfect for her. She said they are very comfortable and warm. She's worn them sledding and tubing and her feet have remain warm. The only negative thing is, she now refuses to wear her size 2's that still fit once she got this. The only difference with this model from last year's is the insoles are not removable.The colors are vibrant and they are well made. This is worth every penny.Our daughter is slightly larger than a size 6, so we ordered 7. The boots were VERY large, especially at the ankle. They were even too larger for my wife with thick socks, who wears a women's size 9. The product seems to be high quality, but the fit is somewhat of a guessing game, so you might go through a few order / return cycles to get the right fit.The boot was adorable! Really, it was very nice on the outside. Bought a size 6 for my daughter. I checked the sizing on the tag when it arrived confirming it was a size 6. I wear a 8.5-9 in a boot and these were too big for me when I tried them on! Definitely a shame. Such a nice looking boot, but WAY TOO BIG.Ended up returning these because they were WAY too big. I think the sizing information might be listed incorrectly as they were "little kid" size 2, but they were actually big kid size 2. Otherwise we would have loved them I'm sure!Very good quality but expect 2 sizes bigger than the actual sizePurchased this for my 7 year old niece who resides in snowy and cold Maine and she loves them. They fit perfectly and she wears them to school throughout the day without complaint.These are sturdy and comfortable. I bought them for my daughter to wear this winter. Have not tested them, however I am happy with my purchase.