Product details:

Low-profile, packable warmth with stretch function that mirrors your every move. Layerable comfort that can hang in the field – it's not a radical idea, but the Burton [ak] FZ Insulator was designed to define it once and for all. A lightweight water-repellant exterior protects an interior filled with 60G synthetic insulation for a solid base of layerable warmth. Furthemore, the whole package is built with stretch materials that move as you do. It's also bluesign approved for a reduced impact on both people and the planet. To round it off, a scuba hood, low-profile cuffs, and an adjustable hem cinch provide the function you need to dial in that just-right comfort.