Yes they are fairly new! I love the idea however I wish they offered some that were shaped as a shoe rather than covering all the bottom. I believe horses feel the ground with their feet! If they can't feel the footing they can trip or fall.
I grew up always being outside barefoot. I did! Still love to be barefoot. No socks and shoes for this girl. I remember how dirty my feet would be by the end of the day. A foot bath was always in order before bed,