Castelli gabba 3 jerseycastellis gabba 3 is the third generation of the garment that launched an entirely new category which some magazines call the rain jersey but pros just simply call it the gabba castelli has slightly tweaked the fit and improved the drop tail and pockets but otherwise theyve kept with the winning formula of warmth breathability and water repellency this gabba 3 is the centrepiece of the perfetto collection of bad weather race clothing3 rear pockets and storm flap