The Castelli Unlimited Pro Jersey is a warm-weather cycling jersey with a technical fit and function. Its lightweight Air O Stretch fabric is breathable and moves with us to keep us comfortable when we are working up a sweat, and it has Castelli's Race cut for an aerodynamic, slim fit. Summer rides are further complimented by a large upper back hydration pocket to stash our water bladder, and integrated hose loops allow us to route the hose over our shoulder and down to our side to keep us hydrated on the fly. Three zippered pockets hold our much-needed gels and bars, while a small zippered security pocket houses valuables.