The main compartment on the Speedway isn't huge, but perfect for my daily carry. It's big enough for a sweatshirt, my 40oz Hydro Flask, and a packed lunch without squeezing anything too much. The two pockets on the front are quickly accessible and seal watertight with their toggle closures. These two front pouches are perfect for accessories or things you may need quick access to; I use one for my chargers and cables, and the other for pens and art supplies. Another pocket on the front is accessible through a zipper, contains a clip for your keys, and because of the long flat shape, is ideal for storing materials like books or magazines. A small pocket on the side is the perfect size to fit their Medium Pouch ($19), which is great for organizing tech gadgets, tools or toiletries.