Yarnology - One more Vesper Sock thought. If you're looking for a bit more of a challenge, you'll want to lay your eyes on Knitted Socks from Finland by Nina Laitinen featuring,
Yarnology Size 17 Purple Circular Knitting Needles 29” (73.7cm) New In Packaging | eBay
Amazon.com: Circular Knitting Needles Set Size 13 Interchangeable Aluminum Knitting Needles Circular 2.75mm-10mm with Case