This is my 12 year old Pembroke welsh corgi. He has spinal stenosis in his lower spine which mimics ALS. He loves to be outdoors and has been a very active dog all his life. He needed the boots this summer due to his rear legs dragging, they needed protection on driveway and sidewalk surfaces. I am going to order him some heavier boots for the winter. Prior to having the boots, his legs would get skinned up and had difficulty healing even if wrapped. The boots helped the wounds completely heal and he does not go outdoors without them on. It was well worth the investment.