From classes to training sessions and study groups with friends - the Tardy Slip 25L backpack has everything you need to keep moving throughout the day and beyond. As part of our Educated series of compatible backpacks and accessories, this 25-liter backpack features a spacious main compartment with a padded laptop sleeve that fits most 15-inch computers, as well as an external zip pocket that includes a key clip. The stretch mesh pocket for water bottles keeps your favorite drink within reach, while the outer pocket with elastic can hold a hoodie or windbreaker when temperatures drop.