I have received the Flag socks in size extra small for my small Corgi Pomeranian Mix we tried them on and I didn't think that they would work you know why because to me they looked tiny! I put them on her feet or paws and I was shocked!!! They fit perfectly and I loved it!!!! it made me want to my Shoes for my dog now that I have socks and close!!!! I would recommend these to anyone because i did a bit of research on them and they can help older dogs that have problems walking and hard floors because these socks have a great grip!!! Check out there website and there Facebook page!!! For a normal set of socks like the Flag socks are only $19.99 which isnt bad for 4 socks!!! usally you will only see sets of 2 but yes these come in sets of 4!!!