The listing, "Paw Tectors" Waterproof Dog Boots, Working Dogs! has ended.
These are real dog boots for real working dogs! They were given to me so I don't know what size but I would guess medium to large dogs such as border collies, sled dogs, etc. The website I found their info on says they're often used on sled dogs to protect their feet from the snow and ice. I'm guessing they could also be used at dog shows to keep your dogs feet clean when you have to take them out to the bathroom, or if you don't want your house dog tracking mud or dirt in the house, etc.... Lots of uses for them! And they are kinda cute too! Too small for my rottie, his feet are too broad. These measure approximately 3 1/4" wide at their widest (the top), and 5 1/2 " long. The tops can be trimmed down if they're too tall.