Made with Australian Superfine Merino wool. Merino is really soft and isn't itchy like regular wool. That's because merino fibers are much finer than standard sheep's wool. But that isn't the only thing that separates merino from the rest. It's also lightweight for the warmth it gives, it's very strong and naturally elastic so it resists wrinkles. It's pretty durable too. With it's wrinkle and odor free properties, you'll want to wear it again and again.