This pattern is a free download for a basic Vanilla Sock with the option for both afterthough and forethought heal instructions. 
 
SIZES AVAILABLE IN THIS PATTERN [XS, S] M (L) yields a sock with an ankle measurement of approximately 12.5,15.25] 17.75 (21.5) cm… [5, 6] 7 (8.5) inches unstretched. Due to the nature of knit fabric, there is considerable stretch to accommodate an ankle circumference of approximately [17.75, 20.25] 22.75 (26.5) cm…[7, 8] 9 (10.5) inches depending on gauge.
 
I hope you enjoy knitting these socks.