50% Polyester, 50% Cotton Zipper closure Machine Wash NEAT AND TAILORED DESIGN: Lightweight insulated for you to wear in many ways with unrestricted movement; Water and wind resistant. KEEP YOUR BODY AND HANDS WARM: 4 carbon fiber heating elements generating heat across collar, mid-back, as well as underneath two pockets for core-body warmth. 3 available heating settings can be adjusted with just a simple press of the button. QUICK AND LONG-LASTING WARMTH: Fast heating in seconds with 7.4V UL/CE-certified battery; Up to 10 working hours on a single charge; USB port for charging smartphones. FOR ALL OCCASIONS: Perfect for the daily commute, walking your dog in the brisk fall air, tailgating for your favorite football team, wearing underneath your winter jacket or even in a way-too-cold office! EASY CARE: Machine washable; The heating elements and vest construction are designed to endure 50+ machine wash cycles.