Generic Polopower backpack.

Modelbackpack.

Multi-panel airflow design provides extra padding for comfort and maximum back support,specially contoured shoulder straps are ergonomically designed  with added padding for comfort and control,External pocket features elasticized mesh pocket which expands to secure various size water bottles for convenient access,interior pocket organizer provides detachable key fob and divider pockets for pens,pencils,cellphone and CDs