It's a classic rucksack topped off with an easy drawstring closure, in case you need closure. Product Features Undercover Organization Despite its simple exterior, this pack offers plenty of stashes including a padded laptop zone that's accessible from inside or out, a tablet sleeve, plus multiple external pockets, and dual side water bottle pockets. Full Day Trip Size At 30-liters, it's sized for a full day's worth of stuff. Low Environmental Impact Bluesign approved materials reduce impact on humans and the planet during manufacturing.