What Our Gearhead(R) Experts Are Saying:"I wore this on a cold, drizzly ride through the hills and never had to stop to add a layer. The Polartec AirCore fabric kept the wind and light rain off while still breathing hard once I picked up the pace. The rear pockets with drain holes meant my phone and food stayed dry even when the spray kicked up."There's a specific kind of ride that starts dry and turns on you fast, and Castelli built the Perfetto 4 Jacket for exactly that shift. We love throwing this on before a forecast that can't make up its mind, knowing the tailored fit will move with every pedal stroke while the fabric handles whatever the sky decides to do. Underneath the sleek look sits real function. The Polartec AirCore fabric works harder the more effort you put in, so the jacket breathes as you climb and seals up as you descend into colder air. Taped shoulder seams guard against road spray, and the drain-holed rear pockets keep your essentials dry no matter how long the ride runs.