Features:1.Many Heating Zones and 3 TemperatureAdjustments:carbon fiber heatingelements generate heat across the waist, belly and upper back; One button for 3heating settings.2.USB Charging: Easy to charge. You need to always connect 5V2A mobile power(this product does not include mobile power). The mobile power needs to beremoved during washing.3.Safe and Healthy: Only 5V far infraredheating, far below the human body safety voltage 36V. Stable heat and bodysafety voltage. Suitable for better warming of the abdomen and waist area.4.Large-area Heating: The electricheating vest has Many built-in heaters, which have a blood circulation andwarmth function, which not only warms your stomach, back, waist and abdomen,but also promotes blood circulation.5.Wide range of applications: This heated vest is ideal for outdoor skiing,winter fishing, mountain biking, cycling, camping, snow hiking, hunting,outdoor attendance, winter street, daily office, etc.6.Safe and lightweight: the upgraded heating system can ensure you to enjoycomfortable warmth. Large area carbon fiber wire heater is safe and insulated.Comfortable \u0026 skin-friendly, touching smoothly and warmth better. Size (Height) - Back Mid Length (cm) - 1/2 Bust (cm) - Shoulder Width (cm) - Lower Neck (cm) S160: 63, 51, 41, 50, 39.1, 50.5 M165: 65, 53, 43, 52, 40.3, 51.5 L170: 67, 55, 45, 54, 41.5, 52.5 XL175: 69, 57, 47, 56, 42.7, 53.5 2XL180: 71, 59, 49, 584, 3.95, 4.5 3XL185: 73, 61, 51, 60, 45.1, 55.5 4XL190: 75, 63, 53, 62, 46.3, 56.5 All Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution.