This black bag is available in 2 different sizes. The smaller size measures 16" x 10.5" x 5" when expanded.  The larger size measures 16.5" x 12" x 5.5" when expanded.  Each one easily carries books, binders, laptops, tablets, phones, clothes, cables, and accessories. Unisex: suitable for both men and women. Zipper closures featuring 1 large main compartment with 1 small front compartment and a top carrying handle. Made of water resistant 600 D polyester fabric.  The larger 17" size has a side mesh pocket that fits a water bottle or compact umbrella.