Durable ripstop polyester adds durability and creates a great look. This unique laptop backpack holds up most 15.6" laptops as well as featuring plenty of organization with it's unique zipped top opening to make getting in and out of the bag easy. Elastic side pockets are tall enough for large water bottles, and the front zipped pocket offers the organization you need for pens, flash drives, or cards. Zipped mesh pocket under the flap is perfect to stash your snacks for a long hike, or your power bank and cables that you need to get to quickly while traveling. 600D Ripstop of Polyester.