Buy from Amazon.co.uk : http://www.amazon.co.uk/gp/product/B004EGETYY?tag=1001consej026-21

Point 6 Hiking Tech Socks - Ocean Medium

Point 6 socks are made using the highest quality merino wool fibres
Built for optimal comfort and performance
Machine-washable and dryer-friendly
Point 6 hiking tech socks have been designed with a cushion to surround the entire foot and leg
Size medium