Due to safety measures, the highest output temperature is limited to 50°C. It is harmful to human skin when the temperature reaches 60°C.

The heating time depends on the capacity of the power source and the operating temperature. A 20000mAh power bank will definitely run longer than a 10000mAh one. (Results may vary, due to different circumstances.)

In lab testing, a 10000mAh Xiaomi Power bank lasted up to 4-5 hours in Extreme Mode (All Heating points in its highest temperature) and up to 10 hours in Normal operating mode. (Results may vary, due to different circumstances.)

Any Power bank with a 2.0A output can be used. Xiaomi Power Bank is recommended for getting the best result from your vest.

The vest is completely water proof. However, machine wash and dry wash should be avoided. Hand wash is highly recommended.

The jacket/vest does not come with any battery. These are sold separately.

There are many different promotion periods, please stay tuned into our social media channels (i.e. Facebook & Instagram) for further information.

A confirmation email will be sent to you after purchase. Please check your registered email address for order information. If there are any further questions, please contact us through email (global@heat2wear.com).

Please note, once the payment has been accepted, no amendment can be made. An order cannot be cancelled after it has been dispatched. Please contact our customer support for any further assistance.

Please check the Xiaomi power bank store list below: US Store: http://www.mi.com/us/pb10000pro/ HK Store: http://www.mi.com/hk/batterytwins/ Korea: http://www.mi.com/kr/battery2/ Taiwan: http://www.mi.com/tw/batterytwins/ For Japan, Mi doesn’t have any authorized seller, But it is on sell at amazon.jp , https://www.amazon.co.jp/%E3%80%90%E6%AD%A3%E8%A6%8F%E5%93%81%E3%80%91Xiaomi%EF%BC%88%E5%B0%8F%E7%B1%B3%E3%80%81%E3%82%B7%E3%83%A3%E3%82%AA%E3%83%9F%EF%BC%89%E3%83%A2%E3%83%90%E3%82%A4%E3%83%AB%E3%83%90%E3%83%83%E3%83%86%E3%83%AA%E3%83%BC-Power-10000mAh-iPhone-Android/dp/B072MPX45D/ref=sr_1_1_sspa?ie=UTF8&qid=1517977162&sr=8-1-spons&keywords=power+bank&psc=1&smid=A26791Z2ES41JR

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The costs are calculated based on package weight. The actual delivery costs will be shown during checkout. If you are an overseas customer, you may have to pay taxes for shipping upon receipt of your parcel. These are set by the destination country. Please contact our customer support for any further assistance.