Oakley voyage 23l roll top backpackoakleys voyage 23l roll top backpack provides plenty of space for your gear it features ergonomic eva shoulder straps and back panels for a snug fit with ventilation and a two way zip for convenient side access this roll top backpack also has a padded internal sleeve that will hold most 15 laptops a 23 litre capacity and reflective details to aid visibility in low light featuresmaterial 100 polyesterergonomic eva shoulder straps and back panelstwo way z