evoc Hip Pack ProThe low profile evoc Hip Pack Pro 3L with 1.5L Bladder boasts a surprising amount of storage for your essential items. Hip pockets for energy bars and an organizer pocket for essential tools provide dedicated storage, helping keep everything you need close by and separated.Stay HydratedThe Hip Pack Pro comes with a 1.5L hydration bladder for quick and easy access to water on the trail, and if that's not enough, you've got two water bottle pockets that help you tack on some extra hydration capacity.Quality MaterialsAiro Flex is an extremely sturdy material that is both permeable and flexible. We use it for our top quality hip belts to ensure optimum load transfer to the hips, with simultaneous maximum ventilation for utmost carrying comfort.Built In VentilationThe VENTI FLAP system enables folding the back piece away for maximum ventilation and enhanced carrying comfort. During longer ascents, you can increase the distance to your back by opening the adjustment strap to boost air circulation. During descents, you can reduce the distance again, which then ensures that the backpack sits firmly and is completely neutral to movement.Air CirculationConstant, free air circulation is guaranteed as a result of the vertical air channel while gaps along the sides of the channel allow additional air to escape. This ensures optimum ventilation while preventing excessive cooling down of the sensitive kidney area, even during extremely high strain activities or intensive perspiration.BreathableAdd in the super breathable airflow back panel and a secure close to back fit and you've got a pack that's ready for any and all of your on trail adventures.pecificationsWeight: 15 ozSize: 11 x 7 x 3Capacity: 3LHydration Compatible: 1.5LReservoir Included: Yes