Product Name: Heated Thermal Vest Liner Battery Heated Vest Man Bodywarmer Padded Winter Vest Model NO.: HV-031 Suitable for: Men Collar: Stand Collar Clothing Length: Medium Length Closure Type: Zipper Material: 100% Polyester Season: Winter Size: S-XL Trademark: warmfeel Transport Package: Mail Box Specification: 42x7x32cm Origin: China HS Code: 6211339000 Product Description *Item name: heated vest *Item number: HV-0031 *Shell:100% polyester microfleece,waterproof and breathability*Size: S to XXL*Voltage :5V ,2A mobile power bank*three pcs heated pad . *Accessory: Charger and li-polymer battery*Estimated to 6 hours of heat per charge*washable by hand*max temperature:55ºC (131°F)*three stage led temperature controller on the chestHeated stageLed colortemperatureBattery lasting timeFirst levelRed104-113οF(40-45ºC)4 hoursSecond levelwhite113-122οF(45-50ºC)6 hoursThird levelBlue122-131οF(50-55ºC)8 hours