Using worsted weight I Love This Yarn from Hobby Lobby and old odds and ends of yarn for stripes.
Cast on 50 stitches on size 8 needles
Rows 1-10: K1, P1
Switch to size 9 needles
Odd rows 11-49: Knit
even rows 12-50: Purl
Switch to size 8 needles
Rows 51-60: K1, P1