Skill Level:
-Easy/Moderate but recommended to watch a youtube tutorial on double knitting in the round and tubular bind-off if you have never done it before.

Size:
-Finished Circumference Post-blocking about 16 inches(sm), 18 inches(lg) (40.5cm, 45cm)
-Finished Height Post-Blocking about 4.5 inches (11.5cm)(possible to finish taller depending on your personal stitch tension.)

Materials:

+Color A 25g/53yds(48 meters) , 30g/63yds(58 meters)-Malabrigo Rios 100% Superwash Merino Wool
+Color B 25g/53yds(48 meters) , 30g/63yds(58meters)-Malabrigo Rios 100% Superwash Merino Wool

+US size 8 circular needles with 16 inch cord, size 8 DPNs or the two circ method.

+Tapestry Needle

+Stitch Markers (I like to keep mine at every 10 stitches with a larger or brightly colored marker for start of row)

Gauge:
16 stitches and 22 rows = 4 inch square in double-knit stockinette. (Your gauge for double knitting will be larger than your gauge for single thickness stockinette due to tension differences and fabric density. A gauge of 18 sts to 4 inches in regular stockinette would be comparable.)