Castelli climbers full zip jerseythe garmin sharp riders wanted a lightweight jersey for the mountain stages of the tour so we engineered the ideal jersey for racing through the entire summer as requested its light very light those are dry weights crucially this jersey absorbs less sweat so the weight savings multiply when youre going all out up the alpe dhuez or trying to beat your training nemesis on your weekly group ride castelli full zip jersey features 88 polyester 12 spandex