Layerable comfort that can hang in the field – it's not a radical idea, but the Men's Burton [ak] FZ Insulator Jacket was designed to define it once and for all. A lightweight water-repellent exterior protects an interior filled with 60G synthetic insulation for a solid base of warmth. Furthermore, 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.