The Gomatic Travel Pack 20L is designed for everyday use and shorter 1-3 day trips. It is made from durable, water-resistant materials and YKK zippers. This bag starts at 20 liters and can be expanded by 50% to 30 liters. It is slim but can be expanded when you need to pack more. The strap system allows you to transform it from a backpack into a briefcase when you need to look more professional. The continuous zipper, magnetic water bottle pockets, RFID-safe storage, and hidden pockets are just a few of the over 20 remarkable features that make the Travel Pack a functional travel package!