Suitable for outdoor activities, motorcycle and mountaineering, camping, hiking, skiing, fishing, hunting trips.feature:-Intelligent temperature control, can control the temperature between 30 ~ 50 ℃-Rapid heating for 1 minute, can rise to 50 ℃ in 5 minutes-Can be used in -40 ℃ environment to provide whole body warmth-High quality down cotton, windproof and warm, antistatic-Washable and machine washable; do not twist water by hand-Carbon fiber is heat-resistant, safe and non-radiating-USB power interface; 5V / 2A mobile power is recommended-High quality waterproof performance, waterproof grade IP3Fabric: 100% nylonFilling: polyester fiberOperating temperature range: -5 to -40 ° CIf you have any questions, you can contact us via email!We also have other styles, welcome to buy!