The revolutionary design of the IconX Heated Core Vest puts the heat where your body needs it the most: next to your skin. It's no secret that you can stay in the field longer when you keep your core warm. The biggest enemy you face during late-season hunts is cold. Cold impacts your performance mentally and physically. It can affect your body's ability to stalk across a ridge or to pull to full-draw smoothly. The key to winning the battle against cold is maintaining your core temperature. Our heated core vest utilizes undetectable carbon-fiber heating elements that crisscross your chest, kidneys, and base of your neck to distribute constant, efficient, and compelling warmth. With three levels of heat available at the push of a button, you're in complete control of your comfort. Wear the Heated Core Vest under your IconX top or Merino Wool pullover on the coldest of days. You'll remain warm with no bulk and experience total freedom of movement and stay in the hunt as long as it takes to get the big game you're after. The revolutionary design of the IconX Heated Core Vest puts the heat where your body needs it the most: next to your skin. Worn under all of your layers, we combined next-to-skin warmth with the unparalleled wicking and muscle support of IconX performance to create the most innovative base layer available. Three different heat settings provide incredible, sustained warmth with no bulk and complete freedom of movement. Features: Re-chargeable 7.4V Lithium-ion battery and wall charger included with purchase Revolutionary next-to-skin warmth and performance Warmth with no bulk and total freedom of movement Provides efficient, effective heat where you need it the most - your body's core Undetectable carbon fiber heating elements across chest, kidneys, and base of neck distribute heat throughout Vest. Easy access to three-color, waterproof LED heat level selection button Approximately 6 hours of battery performance at low setting generating 100-dgrees of heat - individual performance may vary depending on heat level selection and usage Athletic fit for easy layering HydroWick high-performance hollow wicking fiber 7 Performance zones provide key muscle support and thermal regulation Infused with SilverStrike anti-microbial odor control USB output on the battery can be used to charge your mobile device Item weight: 16 oz (based on size Large) Pnuma Iconx Heated Core Vest