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. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.