Gilets are created for in between season hikes. And early starts. And sunset finishes. Basically, whenever you can't decide whether or not to put on an insulating jacket you can put on an insulating gilet, and the Stretch Down Gilet is a particularly good choice. That's because not only is it packed with 700-fill of responsibly-sourced down; it's also because the durable nylon fabric features elastane, bringing a touch of restriction-free stretch to your insulating layer.