If you buy, just make sure that they highlight "designed to stay on" and have velcro thats easily adjustable but doesnt interfere with the 'ankle'. Dog's tendons in this area, if externally 'moved', will cause the foot to 'straighten out' / flex automatically, so you have to be careful not to compress against areas that will cause this. The way that tendons on dog legs feet 'work' is quite remarkable ... just flex your dogs leg joints to see this remarkable 'mechanism' ... and just be sure not to interfere with this 'action' when you 'close up' the bootie or the dog will instantly 'reject' the bootie.

Pet stores (big box pet stores) now have large selections of dog boots that have velcro closures.