The ActionHeat Pro Series+ Bluetooth Heated Base Layer Shirt is a premium, waffle-knit base layer designed to deliver lightweight warmth, flexibility, and comfort in cold weather. Built with upgraded materials, enhanced stretch performance, and Bluetooth-enabled heat control, this rechargeable heated shirt helps keep your core warm whether you are skiing, snowboarding, hunting, riding your motorcycle, working outdoors, tailgating, or enjoying winter activities.Made from a soft waffle-knit performance fabric, the Pro Series+ Heated Base Layer Shirt provides excellent comfort and mobility while fitting under jackets, hoodies, workwear, and other outer layers. The upgraded Bluetooth-compatible heating system lets you control heat settings directly from your smartphone for a more customized heating experience.Featuring a higher-wattage heating system and strategically placed heating panels across the chest and upper back, the ActionHeat Pro Series+ Heated Base Layer Shirt delivers strong, balanced warmth exactly where you need it most while maintaining a lightweight, breathable fit.HOW TO USE:Charge Up - Fully charge the power bank with the included USB charging cable.Plug-In - Connect the power bank to the USB cable located inside the pocket.Turn On - Press and hold the touch-button control for 3 seconds or control heat settings directly through the Bluetooth app.Adjust Heat - Cycle through heat settings using the onboard button or mobile app controls.Features: Premium Pro Series+ heated base layer construction Bluetooth-enabled heat control with smartphone compatibility Soft waffle knit performance fabric for comfort and flexibility Higher wattage heating system for enhanced warmth and performance Tri-Zone heating system with 3 built-in heating panels on the chest and upper back Lightweight heated base layer design for low-profile warmth Touch-button control technology with 3 heat settings Machine washable (gentle cycle) 4 LED power indicators display battery life Material Content: Stretch Waffle Knit Side Panels: 93% Polyester, 7% Spandex Estimated Heating Times:High (Red): Up to 140F - 2.5+ HoursMedium (White): Up to 120F - 3.5+ HoursLow (Blue): Up to 110F - 6.5+ HoursIncludes:(1) ActionHeat Pro Series+ Bluetooth Heated Base Layer Shirt(1) ActionHeat Power Bank (6000mAh)(1) USB Charging Cable