Versatile Design: Premium heated vest designed for maximum mobility and comfort, perfect for layering in cold weather conditions while keeping your core warm Heat Technology: Advanced carbon fiber heating elements strategically placed to deliver consistent warmth across core body zones Battery Compatible: Engineered to work with M12 Lithium-Ion battery system for reliable, long-lasting heat distribution (battery sold separately) Size Specification: Large size vest with adjustable features to ensure proper fit and optimal heat transfer to your body Durable Construction: High-quality materials and reinforced stitching provide excellent durability and weather resistance for extended use in demanding conditions Stay warm and comfortable with this Milwaukee M12 Lithium-Ion Heated Vest. Designed for optimal heat distribution, this large-sized vest operates on M12 battery technology, offering reliable warmth during cold conditions. Perfect for outdoor work or activities, this vest-only package requires separate purchase of compatible battery and charger. The durable construction combines functionality with mobility, making it an essential addition to your cold-weather gear.