Once you get the hang of this very simple tequnique you will fall in love with it as an alternative to traditional colour work. These socks are perfect for warming your feet after skiing or evenings in front of the fire. The sample pictured was worked in Merino- alpaca - silk and to say soft and gushy is an understatement!
This pattern includes a description for the double knitting technique although further instruction is available. I would suggest Lucy Neatby’s Double Knitting DVD and Youtube by example.