Patagonia Black Hole 25L Backpack: A large main pocket holds bulky gear and clothing; bucket opening contains a small stash pocket that seals with a reverse-coil zipper. Internal, padded sleeve big enough for ~ 15 inch laptop. Another internal mesh pocket has a key keeper and organizer panel to hold a phone and other small items. External daisy-chain lash points provide options for securing other gear. Zippered front pocket conceals quick-access items. Includes padded shoulder straps to help ensure all-day comfort and a molded back panel to shed moisture and allow airflow