The ActionHeat Mens 5V-Battery Heated Half-Zip Pullover Long-Sleeve Shirt has a classic style, with hidden heating panels to keep you warm and comfortable for long periods outdoors. This ActionHeat heated shirt is ideal for outdoor work, training, or sports events, and has 3 built-in heating panels that are strategically placed on the chest and upper back to warm your core. FAR infrared heating and ActionWave reflective technology deliver hours of heat and comfort. The system utilizes 5V rechargeable batteries and comes with a powerful 6000mAh power bank that can also be used to charge your phone, tablet, or any USB device. A touch-button adjustment provides warmth for 2 hours on high, 3 hours on medium, and 4.5 hours on low. The ActionHeat 5V-Battery Heated Half-Zip Pullover Long-Sleeve Shirt for men includes the shirt, power bank, and USB charging kit. 91% polyester/9% spandex. Ultrafine carbon-fiber heating panels. Machine wash. Imported. Sizes: S-2XL. Colors: Heather Grey, Heather Blue. Type: Pullovers.