The Makita 18V LXT Lithium-Ion Cordless UV Resistant Fan Jacket features two recessed fan units located on the left and right side to provide optimum airflow and comfort. The fans have three airflow modes (high, medium, and low) plus a turbo mode for greater air circulation. Constructed from titanium-coated polyester, the jacket helps to protect against ultraviolet and infrared rays. The Fan Jacket runs up to 15 hours on the high setting with an 18V LXT 5.0Ah battery (battery sold separately). Other features include a USB power port for charging portable electronic devices, five pockets - two zippered chest pockets, left and right side pockets, and a sleeve pocket - and two ice pack storage compartments on the back of the jacket for increased cooling.