This lightweight garment will not only provide you with soothing heat but also wicks away moisture to keep you dry making it the perfect base layer choice.
Constructed with a Micro polyester/spandex material with a brushed fleece lining that contributes to making it a really comfortable fit. The Zero Layer heating system uses four 5v heating panels concentrating heat down the middle of the back to help keep your core warm.
It is important to note that you can use any properly rated USB battery or power bank to power this product. You must ensure that the power bank is rated for a minimum 2 amp output to properly operate the heat system.