ArcticShield Heat Echo Loft Jacket with Retain Active Technology Retain Active breathable heat retention technology Durable polyester outer shell 150g synthetic loft insulation Stitchless quilting allows for a windproof design Water resistant Breathable Lightweight Insulated collar Zippered chest pockets Elastic wrist cuffs Zippered slash/handwarmer pockets Adjustable drawcord waist RETAIN ACTIVE TECHNOLOGY Utilizes nano-sized metallic technology formulated into our laminate, which efficiently retains body heat by providing thermal insulation Breathable, wicks moisture away from the body, and is extremely thin, providing agility to move freely Delivers more than 20% improved warmth providing versatility in many different conditions, climates, or regions