The pattern on this cuff reminds me of Fruit Stripe Gum!
This fun pattern is an easy one-row repeat that makes your self-striping yarn appear as a diamond shaped pattern. Fun color play! Easy pattern repeat, fitted sole, staggered diamond heel flap and rounded toe.

This pattern is written for two circular needles and any self patterning or self striping yarn works well for this pattern. The diamond pattern is really a spiral rib that has been around a long time and it just cries to be used with self-striping yarn.

I highly suggest you try the cuff on as you knit it to ensure it fits. Due to the nature of bias knitting, it may be too tight. If the cuff is too tight, I suggest you go back to just after the 1x1 ribbing and use one needle size larger for the cuff then go back down to your usual sock needle for the 1x1 ribbing just before the heel flap.

Please note that I knit socks tightly and I concentrated on knitting with a size 1.5 needle and not knitting tightly for the cuff, but reverted back to my normal tight knitterly-ness for the remainder of the sock.

Other materials suggested:
Needles: Two (2) circular US Size 1 or 1.5 (2.25 or 2..5 mm) needles, 24” long
Approximately 350-400 yds fingering weight yarn
Three yarn markers (one red, one green, and one other color)
Darning (chibi) needle

11/17/13 Pattern correction to SMALL size only: increase just after 1x1 rib should increase to total of 72 sts instead of 70. Apologies for the error.

11/18/13 Pattern changed to add an explanation at the beginning of the instructions to explain that the first set of numbers = small and the second set of numbers = medium.

11/19/13 Pattern changed to correct ribbing just short of heel flap and Row 4 of heel flap did not appear due to formatting.

11/25/13 Pattern changed to make Row 4 of heel flap less confusing.

11/27/13 Corrected gusset decrease rows

11/30/13 Corrected fitted instep