This is a Dutch Heel. Row 1 (right side): K6 ... yarn tail to the inside of the sock to secure it. You can also knit the socks with stripes. To make these stripes all you have to do is, k1 ...

I love designing socks! There are so many different textures ... in Stockinette st until foot measures 7.5 (8.25)” from base of heel. N1: (Sole) Knit to last 3 sts, k2tog, k1.

Join in the round making sure not to twist sts and work a tubular stitch for circular knitting for 2 rounds ... and continue to knit around until the sock is 2" (5.08 cm) long.