Opal Knitting Pattern Book. 'Let's Swing Socks'

Opal Knitting Pattern Book.  'Let's Swing Socks'. 
A 54 page detailed pattern booklet to create your very own swing socks. Designed by Heidrun Liegmann for Opal.
Great detailed book with plenty of step by step photos and a 'cheat sheet' section. Pattern is written in full for sizes S,M and L. 
If you've tried knitting socks on Double points and circular needles, then this could be the next challenge!