My male greyhound wears boots - we’ve been unable to find the make he normally wears as they seem to be out of stock everywhere but we’ve recently tried hurrta boots and they’ve been working ok for him. He is definitely much more comfortable on his walks since he started wearing boots.
Therapaw boots are really good and well made, but expensive (but well made!). My lad uses the 'T/F Medium/Large' one, you do need to make sure you get the right size.