Castelli Unlimited Pro 2 Jersey Rosso Corsa aero, gravel-ready function Gravel racing is getting faster, and the Unlimited Pro 2 is the jersey built to match that pace. This is the first time Castelli has applied its Rosso Corsa treatment to its gravel range, bringing the pinnacle of its aerodynamic and comfort technology off-road. The jersey delivers a close-to-body aerodynamic fit, with a CFD-optimized shoulder fabric and seam construction engineered to reduce drag at high speeds. Air_O Stretch body fabric balances breathability and comfort while providing UPF 30 protection, blocking 97% of UV rays on long days in the sun. The rear hydration system keeps you out of the wind and off a sweaty pack, letting you stay aero through feed zones where it matters most. If you race gravel seriously and want road-race-level kit that actually works off-road, this is where you start. CFD-optimized shoulder fabric and seam construction reduce aerodynamic drag at speed, translating road-racing aero gains directly to the gravel race Air_O Stretch body fabric provides a race-fit stretch with active moisture management and UPF 30 sun protection for warm-weather efforts Integrated rear bladder pouch holds a 1. 5L hydration bladder with a mesh construction that allows airflow, keeping the pocket comfortable with or without a bladder loaded Hose loops route and secure your hydration line from the bladder to your shoulder, keeping it out of the way at any pace Three open rear pockets plus a zippered security pocket give you room for nutrition, tools, and valuables without compromising the jersey's aero profile Rosso Corsa-tier construction puts this jersey in the same product tier as Castelli's top road-race kit, validated by Rob Britton's prototype win at the 2025 UNBOUND XL | Castelli | Unlimited Pro 2 Jersey Men's | Size Small In Black