This contemporary backpack comes loaded with features. The spacious main compartment has a drawstring closure at the top that gives the bag a sleek look. It can be unzipped to reveal a center gusset for more storage space and an elastic band at the top. Inside the main compartment, there is a full size pocket with organizer slots for stationery and essentials. On the gusset there is a built-in USB port that allows you to connect your USB charging cable to your devices for convenient charging. The other end includes USB cable inside the gusset that can connect to your power bank (not included). The padded back compartment holds a 17 inch laptop & a padded sleeve for tablets. The oversized top flap is made of water resistant tarpaulin material to protect the contents inside from the rain. This multi-function backpack comes with a luggage and chest strap on the back. Made of heathered 600D Poly canvas mixed with 1680D & 600D polyester.