Long sleeve heated shirt - The ALL MIGHTY Heat Layer Shirt is a 7.4V battery-powered heated base layer - Uses high tech, moisture-wicking stretch fabric - Provides optimal heat transfer - Durable, hand washable, and lightweight - Garment has 6-8 patented Carbon Fiber Softheat heat panels - Insulated with 3M Thinsulate - Soft and flexible heat panels for maximum heat transfer - Heat covers the chest, arms, collar, upper back, and lower back - Connections at the end of the sleeves for gloves or glove liners - Offers 4-Level or 6-Level heat control options - Includes a multi-voltage input remote controller for wireless heat control - High-quality materials used such as 3M Thinsulate, YKK zippers, and durable connectors and wires - Custom 7.4V batteries made with the best Japanese hardware - Amps: 2.8, Ohms: 2.8, Watts: 22.7 - Features Samsung/Sanyo battery cells - Made from high-tech, moisture-wicking stretch fabric - Keeps the heat panel flat against the body for optimal heat transfer - Designed for comfort and to wick away sweat or moisture - Fits well and is not noticeable when worn.