I have to say that this is one of the handiest bags I have come across lately. I needed a bag that was light weight (due to health restrictions) but had separate pockets for easily finding keys, phone, wallet, etc. The bag part is about 15 inches with the rest in a shoulder strap. There are 2 zippered pockets that may be about 5x7 inch in size and about an inch deep. Then there is an open pocket with a buckle to keep thimgs in and a mine zipper pocket perfect for cash or keys. It holds everything I need to carry with me plus some extra room. Plus the strap is adjustable too. I highly recommend the bag. Perfect for errands or walking.