6000 mAh battery provides an additional 40 hours of battery life for your smartphone or 10 hours for your tablet. Charge your phone on the go with our Patent-pending shoulder strap USB interface just plug your phone in charge and go! Dedicated padded laptop pocket fits up to a 15" laptop. Padded & ventilated shoulder straps and back panel keeps your back and shoulders cool and comfortable for the long haul. Dual water bottle storage - keeps you hydrated so you can perform at peak levels. Interior organizer.