This is the third generation of the garment that launched an entirely new category what some magazines are calling the ldquorain jerseyrdquo but the pros just call the gabba with castelli supporting team sky they and you get those gabba benefits in a team sky version castelli have slightly tweaked the fit so its even more aero so you dont waste precious energy and theyve also improved the drop tail and pockets other than that theyve kept with the winning formul