- Size: 6XL • Vest with 13 zones of intelligent heating that provides constant warmth in key areas such as the neck, back, and lumbar region. • Made with high-quality carbon fiber wire for stable, safe, and energy-efficient performance. • Three levels of temperature control: red light (40°C-45°C), white light (30°C-35°C), blue light (20°C-25°C). • Operates with a 5V/2A mobile power source, maintaining warmth for 8-10 hours with a 10,000 mAh battery. • Easy to wash by hand or machine, with an insulated and waterproof USB connector. • Lightweight and warm design, ideal for outdoor activities such as camping, hiking, fishing, and more. • Suitable for men, women, young people, and the elderly.