Castelli Aria Shell 2 jacket 2026

Not your old-style wind jacket

Ultra light, ultra breathable, ultra packable wind jacket for cool conditions. The Aria Shell Jacket has always been one of the most functional pieces in the lineup. Now, it’s better than ever. They've refined the fit for improved ergonomics and added reflective details with the new logo and wordmark, making you more visible without compromising style. It’s still impossibly light, still blocks the wind where it counts, and still breathes thanks to the mesh side panels. But now it fits even closer, thanks to updated stretch panels through the sides and sleeves — eliminating flapping fabric and sealing out cold air. It’s the kind of jacket you’ll wear for the entire ride in mild conditions. And if the temperature rises, it packs away easily into its own side pocket to disappear into your jersey pocket or seat bag. Classic, evolved. Performance, enhanced.

Features

• Ultralight windproof woven microfiber front and back
• Striped mesh fabric at sides and back of sleeves is stretchy to prevent fabric flapping in wind
• Folds up extremely small
• Integrated stuff sack
• YKK® Vislon® top- and bottom-opening zipper
• Reflective Castelli logos

Tech Specs

• Insulation: 1/5
• Waterproofness: 1/5
• Windproofness: 4/5
• Breathability: 3/5
• Lightness: 5/5
• Temperature:10°C - 18°C / 50°F - 64°F
• Fit: Tailored