you need this bag! CALPAK is known among the world of people who like to travel with practicality and style. this bag has lots of pockets for your keys, cards, phone, other essentials and a 33 oz water bottle. it's insulated to keep your drink of choice cool. this bag is black, has a detachable strap, bungee cord to keep your stuff snug, 3 pouches and one zippered pocket. please ask any questions and thanks for viewing