From classes to training sessions and study times 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 suitable for most 15-inch computers, as well as an exterior zip pocket that includes a key hook. The stretchy 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.