The Peak Design Travel Tech 2L Pouch, is part of a compartment system that enhances your ability to organize the contents of a Peak Design Travel-Series bag. Specifically designed for electronics acce espandi...ssories, it features a water-resistant zipper and a clamshell configuration with fifteen internal organizational pockets to hold a range of devices such as batteries, memory cards, portable hard drives, cables, and power adapters. Internal and external zippered pockets along the length of the pouch give you additional storage for your passport, a smartphone, folded documents, or pens. If you have a power bank to keep your gear charged, there is a power cord pass-through leading from the interior and through the external zippered pocket so you can access it without having to remove it from the pouch.