Many zipper pockets, and pouches Mesh pouch for water bottles on both outer sides Pockets for pens, pencils, cell phone, etc. Hook to attach key chain to Adjustable straps in back for shoulder, And on sides Tech Spot for head head phones Tech Spot for lap top or tablet Reflective trim Aprox. 21" x 16" Width about 8-9" Pre Owned Great shape. Very clean inside and out. Only thing worth noting is one of the small pockets looks like it came un sewn inside a little on each side corner. Does not show at all when zipped. (Shown in last photo).