As part of my prep for the Ennerdale 50k I was looking at trail specific shoes and during my research references kept popping up about these.
Apart from the usual technical aspects of the sock construction they of course have five toes. The theory is that in conventional socks the toes bunch together reducing the platform for the push off and prone to rubbing together increasing the chances of blisters. In addition by allowing the toes to spread naturally it is said that less strain is imposed on the toes and foot for the joints and muscly things.
Tried them on several runs and they felt good so wore them for the big event.
Over 50k they were immersed in water and mud - no blisters and feet felt pretty good. When trotting through water no sense of foot sliding about within the shoe and once out of water squish squish and feet felt warm and dry
Very happy with them, would thoroughly recommend them and they are also endorsed by Kevy so what more can I say.