Lorpen socks are constructed in layers with hardwearing fibres on the outer surface and the softer and high wicking fibres next to the skin. The toe seam is linked by hand which costs a lot more than a machine but gives a totally flat seam. Lorpen socks have 10% genuine Lycra yarn running through the whole sock to give a custom fit to every foot and holds its shape through the life of the sock. You have to try them to believe. Lorpen Tri-Layer Technology.