When there's no question that it's going to rain on your ride, don't fool around with a thin, maybe-it-will-maybe-it-won't windbreaker; instead, enjoy the burly, no-doubt-about-it protection of the Mavic Stratos H20 Jacket. This fully waterproof jacket's Cocona Xcelerator fabric includes a naturally derived treatment that enhances moisture wicking for greater comfort under the shell.