Silk/Merino 4 Ply (Sock)White Gum Wool has revised its sock yarn and the new improved version is a 30 70 blend of tussah silk and WGW superfine merino and a new spin. Its a 4 ply, spun from 4 singles in two pairs, in its new twist on twist style to improve wearability. The different dye responses of the two fibres result in a subtle heathered look. With the release of this new yarn the colour palette is different to the older nylon reinforced yarn. Perfect for socks,