Core warmers: vests are excellent midlayers and have room for layering function and style. We collaborate with survivalists, ranchers, craftsmen, aviators and hunters to develop purposeful styles for varying disciplines. From field-testing our ES vest and all its features, to considering what a pilot might need from a vest during an emergency, we have a lot of passion for this garment. The vest is both a style statement and an excellent sleeveless tool that packs down small and keeps your core toasty warm. Just like all our other garments, each vest is made to order and is customizable in any colorway.