General comments:
- Overall height of the boot is 6.875" (size 5 Toddler)
- Very easy to put on - there is plenty of room for thick socks
- Zipper is a nice feature; however the zipper on one boot is difficult to pull up/down (it appears to be a construcion issue as he stitching is too close to the zipper teeth for about 3 stiches - and this is where it sticks)

My 19 month old daughter loved stomping around the house in these boots.  It was adorable.  She is on the small side (15th %ile, but these boots did not overwhelm her.  So, the sizing seems decent.  Because of the above comment on the zipper, I plan to return the boots.  Sad because they are super cute.  I also ordered a pair of Tundra Teddy 4 Boot which I plan to keep.