Falke making top-of-the-range socks which are fabulous for your feet.
I stock their running sock in white and their trekking sock in navy in various sizes.
What I particularly like is they are ‘ergonomic,’ meaning they are designed to fit the right or the left feet. This reduces the risk of friction and therefore foot problems such as blisters, corns and ingrown toenails. They also have cushioning on the sole, heel and toe areas.