If you are into bare feet on a boat or kayak you will love these socks. The Grip socks is basically a super thin sock that gives you protection, grip that feels like you are wearing nothing. They are so thin, you can even wear them inside of shoes.
For walking the beach with out sand getting in is big key. Lots of pro beach volley ball uses them for feet protection.
I think this would be great for SUP or if you need protection on boat and like the bare feet feel.
They had a show special so I bought a pair to try out. I will let you guys know the pros and cons of the shoe.