Men Autumn winter Smart heating Cotton Vest 9 area Heated V neck vest Women Outdoor Flexible Thermal Winter Warm Jacket M-7XL

2：Please note that this jacket follows asian sizing which is two to three times smaller than European sizing.

3：Recommend  batteries model, please use batteries with high USB Power Delivery（unit：W）， The higher the USB Power Delivery, the higher the heating temperature.（output Power (W)=Voltage (V) × Current (A).）

for example ：output power 10W=5V*2A   / output power 22.5W=5V*4.5A