Our vests use a standard USB Power Bank (18W 5A), and we recommend 10,000 mAH to get up to 12 hours of heat.
Due to international shipping restrictions (they can't go on an airplane), the power banks are sold separately.
If you're located in the US or Canada, you will be given the option to add one to your order at checkout! Or you can add the bundle offer on this page.
Please note that the battery may be shipped separately and arrive before or after your vest.