8 sts per needle cast-on, knit 1 needle, start increasing on second. Increase to 20 sts per needle

90 rounds after last increase, start heel.

Work back and forth on first half of round for 22 rows. 2 decrease rows in flap, 10 sts between decreases.

PU&K 14 sts each side of heel flap - no gusset.

86 rounds to ribbing. K2P2 rib for 30 rounds