Named in honor of the arctic blast that hit the Midwest at the beginning of the year, Polar Vortex Baby Blanket is sure to keep your little one warm. Knit in the round, from the center out, the increases create a spiral that is broken by a simple-to-knit lace pattern. While the sample is knit with one strand of worsted weight yarn, this blanket can be knit in any yarn, and to any size.