My twelve-year old labrador, of ebullient character, had been severely handicapped by sterile granuloma for four years, despite the best veterinary treatment, and had latterly been almost crippled by arthritis, again, despite very expensive medication, which he still takes. At first, I was dubious about this pair of boots. Others by the same manufacturer had suede soles, a knitted cuff (which snagged on dewclaws) and one velcro strap. They inverted easily and the toes were soon scuffed through. This model, made of neoprene, with plastic soles, looks more flimsy, but does the job much better, because the two straps are more secure, and the dog has learnt to walk without scuffing the toes. They have transformed his life, and he bounds along again with his old assertive swagger. Excellent value.