The Protector Plus socks from Rohner are even more comfortable and pleasant to walk in. The sock is a protective and functional layer between your skin and the shoes. By wicking moisture away from your skin and transferring friction between the two socks (under-sock and normal sock), the first-layer sock prevents blisters from forming. There are not even any pressure points on the toes, as this is almost impossible thanks to the flat seam. A real magic sock - not just for sensitive feet.