(Mostly) Ridge Rib Socks--Free (and mostly easy) Sock Pattern

This has proven to be a very popular pattern, featured on Knitting Pattern Central and other sites!  For your free PDF pattern download, click here to find it on Ravelry.
 

(Mostly) Ridge Rib Socks

Yarn-- Cascade 220 Superwash Sport in colorway 1944 (blue), 2 skeins for size given.  For larger socks, you'll need 3 skeins.
Needles-- US size 2 (2.75 mm) double pointed needles--4.
Finished size-- Men's medium or Women's large.