I purchased these boots to prevent 'snowballing' in my dogs paws while cross country skiing, (after already attempting 'Mushers Secret'). I put them on and had her walk around the house for a while the evening I received them and then made sure they were well fitting and tight before letting her run in the back yard, in the five minutes she was outside 3 fell off... The next day I tried again, this time I made sure to really tighten them up. They managed to stay on while walking around the back yard but when I took her skiing out in the field she lost one about a mile later! after spending an hour looking in the foot deep snow it was no luck, gone till next spring maybe... then on the way back (after checking again to make sure there was a tight fit) 2 more fell off... and after another hour of searching I again gave up... at that point I took the last boot and put it in my pocket.
This product was down right horrible and I would recommend that it should actually be removed from the site.