25 litre capacity. Large main zippered compartment features a padded slash pocket that holds up to 15" laptop. Smaller zip compartment features 3 accessory pockets and 2 pen slots. 1 front zip pocket, 2 gear loops and 2 side mesh pockets. Constructed of 300D two-toned polyester. Includes an air mesh padded top handle, padded back and 2 air mesh padded shoulder straps.