Also, while replacing the old pair, I had issues fitting them. I enlarged the hole and changed the spacers and all is good now. An example of the "hook tools" I am referring to is in the "blue plastic hooks" in the "iFixit Pro Tech Toolkit - Electronics, Smartphone, Computer & Tablet Repair Kit". Very happy with this purchase Very adorable! I will say, we got a size 9 and there is a small amount of room near the heel that if you don?t Velcro it tightly , the heel Pops umout from the strap a bit . Pros:inexpensivemostly comfortableCons:Falls apart faster than I expected. The back strap is easily removable so it turns into a very comfy slide. The status light is visible through the thin silicone material and the reset button is still accessible on the back. Again, so happy I did.