This bag is spacious without being bulky. It has pretty much everything you could ask for. Inner pockets and organization, will hold your water bottles, small items and there is an interior zip pocket. Exterior pockets can hold keys, phones and other quick grab items. There is a luggage strap for travel. There is also a small zip off pouch with a wrist strap for when you don’t need the entire bag. The sides unsnap to expand and hold extra. There is a padded laptop pocket. Did I miss anything? You won’t regret this purchase. Buy one now!! I have more than one. 😊