We’ve made layering a science with our Lethal Layering System technology and our all season systems. From comfortable against your skin base layers to durable outer shells, each of the fabric weights, light, mid, and heavy, wicks away moisture to keep you warm and dry, while our anti-microbial scent control technology safely neutralizes odors and keeps you fresh on those extended hunts. Start by building the foundation of your system with a specialized base layer designed to suit your environmental conditions and needs. Next, choose a mid-layer or outer shell based on your weather climate. Last, choose an insulating shell for extreme cold weather. These are made up of either Primaloft Gold synthetic material or the highest quality 800-fill goose down. These are ultra-lightweight and packable.