Heating-- Intelligent temperature control, heated with knees, back and waist. Powered by any 5V / 2A USB portable charger, the USB plug is compatible with most portable chargers on the market.Comfortable and Breathable-- Made of far-infrared carbon fiber wire heating element layer and soft skin-friendly materials to ensure a warm and comfortable touch. Carbon fiber heating wire, rapid heating, uniform heating.Safety Insulation Design-- built-in thermal protection module, 5V safety voltage, avoid overheated. Washable, not easily deformed, not easy to fade, not easy to shrink. Support hand / machine cleaning(gentle mode).3-gear temperature control-- press the button to facilitate switching, temperature controllable, rapid heating. Suitable for long-term outdoor workers, resist the cold winter.For Outdoor and Indoor activities--The best solution for various outdoor activities, such as skiing, fishing, jogging, Hunting, biking, hiking motorcycles, protecting climbing dogs, Running, snow removal, etc.