I am looking at putting Lavacore socks under my 5mm boots. I dive wet and only my feet are cold this season (45*F water). How many mm of additional warmth will these add?
Also, I wear 9-1/2 and that is on the line between M and L. Do these run small or large?
Also, I wear 9-1/2 and that is on the line between M and L. Do these run small or large?