Lightweight heated vest using micro carbon fiber. It has 3-level temperature adjustment, perfect for cold winters. - Color: Black - Size: Large - Heater Function: 3-level temperature adjustment - Battery Life: Approximately 4-6 hours on high, 5-8 hours on medium, and 5-8 hours on low. - Material: Micro carbon fiber - Washable: Machine washable - Design: Lightweight design Thank you for viewing.