Castelli Aria 2 Vest Wind protection you'll forget you're wearing - until you need it. The wind vest is a staple of any serious rider's kit, and the Aria 2 is the version you'll actually reach for. A windproof microfiber front blocks the chill where it matters most, while striped elastic mesh panels at the sides and back keep airflow moving so you don't cook on the climbs. The fit stays close to the body throughout - no billowing fabric, no sail effect on the descents. When conditions change and you want to pocket it, the vest folds into its own integrated pouch and disappears into a jersey pocket without a fight. It's the layer that earns its place on every ride where the morning temp and the afternoon temp tell two different stories. Windproof microfiber front blocks wind across the chest and torso without adding bulk or restricting movement Striped elastic mesh side and back panels keep airflow moving and prevent the fabric from flapping at speed, maintaining a clean aerodynamic profile Integrated stuff pocket lets the vest fold into itself and stow in a jersey pocket, so carrying it costs you nothing YKK(R) Vislon(R) two-way zipper gives you on-the-fly ventilation control without stopping to strip the vest off entirely Reflective Castelli logos add low-light visibility without compromising the vest's clean, race-cut look | Castelli | Aria 2 Vest Men's | Size Small In Clay