Carrying trolley 4 separate compartments closed with robust zippers. In the first compartment, 2 large pockets 16x17cm mesh on one side, loads of storage (11) of various sizes for small equipment of all kinds (eg simultaneous storage: check book, wallet, laptop, external hard drive, PDA, business cards, USB memory, etc.) + 1 handy key ring. Between the first and second compartment, housing 22x15cm directly accessible on the front for small items (wallets, lighters, pens). The second compartment offers three partitions separated by a rigid PVC plate without difficulty accommodating various documents (eg 3 looseleaf binders A4 2cm thick 40 pages). The third compartment houses an individual bag with 2 compartments, the main 15/16 for notebook "(usable interior dimensions 27x35cm), the second for qq document further includes 16x16cm 2 mesh pockets and a housing for mobile phone. If you are the happy owner of a 17 "laptop, it will host the third compartment easily. It will in this case deprive you of the bag or secure it to the rod of the trolley as shown in the presentation of the product shots (you can put the vacuum bag and the computer in the compartment but it forces a bit so to avoid) . However, you can put the documentation in the 3rd compartment next to the notebook if you remove individual bag, which is very useful. The fourth and last compartment also includes 2 mesh pockets 20x19cm and reserve a space roomy enough to accommodate some replacement effects (for 1 day) or more useful for me, yet documentation (eg 2 flexible binders). In summary, a great product that impresses with its functionality as well as by its design and better quality finishing.