From high alpine monsoons on mountain missions to trail explorations, the Fine Line shell has you covered. Featuring our BD.dry waterproof/breathable/windproof solution, the FineLine is a durable, lightweight stretch shell built for mountain adventures. Built with BD.dryour engineered waterproofbreathablewindproof solution. Stretch shell fabric increases durability and comfort. Underarm gussets for added mobility. Adjustable, climbing-helmet-compatible hood. YKK reverse coil PU coated center front zipper. Stows into external chest pocket with carabiner clip loop. Low-profile, elastic cuffs. Fit: Slim.