Not tiny, but not a big campus size either, Like a purse size as a backpack.Great for hands free shopping, but I would not be able to but school books and binders in it Approximately 12.5"H. x 9"W. x 4.5"D. -Large Double-Zip Compartment Has 2 Interior Slip Pockets -2 exterior zip pockets - back of back has a nice layer of padding to keep your back comfy no matter what is in the bag. -Exterior Has 2 Side Pockets - 1 has a zippered gusset for extra room when you need it, great for water bottles