The Madrid Diaper Backpack Messenger Bag by Obersee is a spacious, high-quality diaper bag with a purse/messenger bag style that transforms into a backpack. The exterior of the water-resistant messenger bag is made of robust material and features a wide shoulder strap with a neoprene shoulder pad for comfort and a quick, easy-to-use length adjustment clip. It also features a padded top carry handle, side drink pocket, a pacifier pocket, a fleece-lined tablet computer pocket, 2 pockets under the cover flap that may be accessed when the cover flap is closed, a small pocket for personal items, and rings for use with stroller straps (stroller straps sold separately). The back of the bag features padded backpack straps, which fit into a back pocket when not in use. To allow for flexibility in style, the bag features a detachable cover flap so that the style and color of the front of the bag may be changed to fit your personal preference. The Madrid Diaper Messenger Backpack includes an Obersee Voila changing mat for any outing. The Voila Changing Mat slides quickly and easily into the front horizontal pocket under the cover flap, which can be accessed even when the bag is closed. The interior of the bag features 2 compartments divided by a large center zippered section. The back compartment is specifically designed to fit the included cooler bag and clothing cube. The front compartment features a large mesh zipper pocket for easy viewing of contents and 3 smaller mesh pockets for keeping various baby supplies organized. The bag can accommodate most 17-inch laptop computers, so it can easily be used as a business bag once your child is out of the diaper years! The bag measures 15in wide x 13in tall x 6in deep (38cm x 33cm x 15cm). The clothing cube and cooler bag each measure 12in wide x 7.5in tall x 2.5in deep (31cm x 19cm x 7cm) and the Voila Changing Mat is 26in long x 12in wide (66cm x 31cm) when open and 7in wide x 12in long (18cm x 31cm) when folded closed.