I lost the link to the pattern, but thankfully I'd wrote it down...!
It's done using 10.5 or 11 size needles. I used some white double knit yarn. 116 or 120 sts (I used 120)
You begin with 10 rows garter St.
Row 1: K7, P until 7 sts left, K7
R3: K7, P, K7
R5: K7, P, K7
Rows 6-10: K
Repeat Rs 1-10 14 times but end on R5...
10 rows garter St
Ta daaa!! Sorry for not having the link
Hope it's ok to share though?