The Evoc Hip Pack 3L offers optimised back ventilation, the Evoc Hip Pack 3L is perfect for bike rides with little equipment. Thanks to the venti flap system you can individually adjust the distance of the fannypack to your back and the ventilation along the back panel.Evoc Hip Pack 3L FeaturesAir flow contact system offers perfect back ventilationAccommodates hydration systems up to 1,5l (Not included)Tool compartment (separate, quick-access)