This cotton blend hat and cowl set is a perfect in-between level of warmth. Great for days with a chill in the air, but also very breathable. The hat is tall enough to wear brimmed up, doubling the warmth over your ears. It measures 11" from top to bottom. The opening of the hat is 9.5" when relaxed, but stretches up to 14". The cowl is 8" tall, and has a 44" diameter when relaxed - long enough and stretchy enough to wear wrapped twice as an infinity scarf. Machine washable on a delicate cycle - maybe wash alone once or twice in case of color bleeding - and lay flat to dry.