Once we reordered different sizes for our Grip Trex boots, I believe we have a great fit for Maggie's paws. The 2.0" were out of stock, so we ordered 2.25" for her front paws. They were just too big, but we reordered the 2.0" and they fit very well and stay on her paws. We used the size chart and it said that we needed 1.5" for her back paws, but they didn't seem big enough to cover the back part of her pads, but when we reordered the 1.75", they were a good fit. We immediately went for a walk down the street after fitting all her boots on her paws. It was about 96 degrees out, and she was having a great time and was so cute in her boots! We can't wait to take her hiking with us again!