1:Battery not included
2:We are Asian size, 2-3 sizes smaller than European size, please choose the right size according to our size chart。
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



















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Appreciated the temperature adjustable, good quality, warm, comfortable, size very good, prompt delivery in good condition, enjoy it very much as my back is often cold. Recommend to friends and family
I was not to sure if the product was working, until i got to hot! Heats up quickly working off a simple 10000mah battery bank. I also used a 12v car cigarette extension lead with usb adaptor, for those times when watching the tv. Well sewn and quite warm before the heating element kicks in. Recommended. Nice and simple without to many zones etc. Basically front and back.
The operation is good. I don't think the wattage is high, and I don't know. It's getting warmer after a while. I'm not sure how to adjust the buttons.
Back heats up nicely, front only heats up on one side in a small area
Thank you
Arrived very quickly.
works ok
Very good purchased 2
9 days super fast delivery very impressed . This is my second vest I ordered . Brilliant for working in 2 degrees cold room . Thank you life saver to whoever invented this vest .
As advertised
There is not much heat panels in the front, the back was pretty good, but the heat pads are slim pickings in the front.
Great product. Works well.
👍