We call this hat "storm" because the shades of grey are reminiscent of clouds ready to release an abundance of snow. It could also be called "storm" because it would be the perfect hat to be wearing if you were caught in one! It is made from a blend of 50% alpaca and 50% wool. The rather bulky yarn and design work to keep your head toasty warm. If that wasn't enough, this hat is lined with the most incredible textured polar fleece. It's like your head and ears are being surrounded by the softest clouds.