What Our Gearhead® Experts Are Saying:"This jacket is my go-to for unpredictable weather. It’s super light, packs down into its own pocket, and provides just the right amount of wind resistance without overheating. Whether I’m on a high-alpine climb or an early morning trail run, the stretch ripstop fabric moves with me and keeps me comfortable."The Kor AirShell Jacket is the kind of layer we never leave behind. Designed with Pertex® Quantum Air stretch ripstop fabric, this ultralight shell balances breathability and wind resistance for high-output adventures. Whether we’re climbing exposed ridgelines or setting out on a breezy trail run, the raglan sleeves and underarm gussets provide unrestricted movement, while the elastic cuffs and hem seal in warmth. This jacket packs into its own pocket for ultimate convenience, making it easy to stash in a pack or clip to a harness with the integrated carabiner loop. Two zippered hand pockets provide secure storage, and reflective details add a touch of visibility for low-light missions. Lightweight, packable, and designed for movement, the Kor AirShell is ready for wherever the trail leads.