The Lifestyle Reversible Hat is a cozy, unisex double-layered design that offers extra warmth and comfort. Begin by using a provisional cast-on method of your choice with waste yarn. The first layer of the hat is worked from the bottom up to the crown. Once finished, return to the provisional cast-on, place those stitches back on your needles, and join a new yarn to begin knitting the second layer. When both layers are complete, simply tuck one hat inside the other—and voilà! You’ve got a snug, toasty reversible hat.