Stormtech Aeronaut BackpackWith its intelligent weather protection, the Aeronaut backpack protects your laptop and other valuables, thanks to waterproof zip closures and a reinforced waterproof layer. Keeping you comfortably cool and organised, it has ergonomic, adjustable shoulder and sternum straps, as well as a padded airflow back panel. The Aeronaut backpack also features an RFID blocking pocket and zipped expansion panel to increase capacity from 25 litres to 35 litres