ArcticShield Retain™ varies the heat level to give you warmth where you need it most, while still allowing you room to move - because it provides less bulk. A warm hunter is quieter, mentally focused, on the hunt longer, and more likely to be successful. Independent laboratory tests have confirmed that ArcticShield Retain™ captures greater than 90% of body heat, and maintains the 90% heat for a longer period of time than other products on the market. ArcticShield Retain™ is strategically located throughout the garment keeping you warm and comfortable no matter what level of activity or temperature range you will be hunting in.