Boblbee Cargo Net for Megalopolis AERO Backpacks, Handmade Nylon Coated Elastics Cords, Attaches to Outside of ABS Hardshell, The Boblbee Cargo Net for Megalopolis AERO Backpacks (Black) attaches to the outside of the ABS hardshell. It is handmade from long-lasting nylon coated elastics cords. The net can carry things such as; windbreaker gloves bike helmet or sports equipment.