Storm systemâ® wool baseball cap with a rain systemâ® surface treatment, a hydrophilic membrane and a third layer of fine gauze-effect microfibre. The storm systemâ® and rain systemâ® trademarks are owned by loro piana. Combining herno's refined aesthetic with a functional water-repellent treatment, this is a lifestyle accessory that enhances everyday looks. Regular fit peak he+m2:m5rno patch on the front adjustable strap at the back metallic logo on the side made in italy performance: water-repellent treatment. 100% wv - main fabric: external layer: 100% virgin wool membrane: polyester internal layer: 100% polyester secondary fabric: 65% polyester 35% cotton lining: 100% polyester.