Skin track, singletrack, alpine crack-for fast-paced pursuits where a hardshell is overkill and a midlayer fleece lacks protection, the Kor AirShell Hoody is the ultralight, ultra-packable layer of your dreams. This durable yet super-breathable jacket rebuffs light moisture and cuts through alpine gusts thanks to its Pertex Quantum Air fabric, and stows in its internal pocket when conditions ease up. Call it an ultralight softshell or a super breathable wind shirt, but we just call it the do-it-all layer that stays in our pack until the moment strikes.