Deerhunter Heat Handwarmer is a rechargeable battery operated handwarmer unit with a soft lining – a must for keeping hands warm when the weather is cold. Constructed of 100% polyester with a TPU membrane for weatherproof protection, this handwarmer straps around the waist and is powered by a USB power pack (not included). Hassle free and quick to put on or remove as conditions dictate, it has a nice soft and warm lining and a smart integrated heat system that means you can simply turn the heat up or down at the push of a button. For instructions on how to use the heat function, please read the guide that comes with the product or follow our "How to use your Deerhunter Heat Product" guide. Available in Wood in one size. Power bank not included as this will run off any USB power bank (5000mAh) Soft and warm lining Adjustable waist strap with click buckle Integrated heat system Lasts up to 6 hours if used continuously On/Off button inside a zipped pocket Carry bag included 3 heat levels to give you max comfort in all conditions Size: One Size