Hi Roanna, I just wanted to send you a quick note thanking you for the great boots, you were right he needed the XL not the XL+. I have only used them on his front paws but the affect was absolutely amazing. My newfie is one of the laziest animals on the planet, everything is in slow motion, when I put his boots on he took off running, I was shocked. He has been wearing them for a week and he now runs or sprints everywhere he goes on the dog walk and is usually in front of me and my other 2 dogs. Before the boots he was always 40 yards behind us. He loves his new boots. Thanks for the great product, I have probably already sold a few pairs for you since he is the most popular dog at the park everyone is asking about his new booties. I attached a pic for you. Thank You, Kelly Kindopp