The B0 SLIM is obviously the thinnest possible FLEX SYSTEM configuration. We sometimes call this bag "The iPad bag" because it works so well as an ultra-thin computing and personal bag - a "man purse" if you will.
The B0 is simply the POCKET CAP FRONT and the FLAT CAP REAR modules zipped together. It has no definable interior storage dimensions since it is just two End Caps put right against each other, but the flexible nature of the parts allows one-half inch to three-quarters inch of flat items to fit inside between the modules.
The iPad (or other tablet) could be stored inside the long slip pocket on the back of the FLAT CAP REAR. Or, of course, the space between the two modules has the capacity to store the tablet or a 13" Ultrabook laptop or some Manila folders, or documents, or a magazine or two. So it is possible to carry a thin laptop AND an iPad with this configuration.
The B0 SLIM also serves as the obvious starting point for all other configurations. You can add and remove space as necessary just by adding different Center Sections.
It is possible to carry the B0 using both a handle and a SHOULDER STRAP because of a clever (and Patent Pending) clip called the "D3 CLIP". A pair of D3 CLIPS attach to two loops on the top (or another set of loops on the side) of the bag. And then the SLIM HANDLE and SHOULDER STRAP attach to those D3 CLIPS. See the Gallery for photos.
The FLAT CAP REAR module offers two flat pockets on the outside, and one flat half-height slip pocket on the inner surface of the module. The primary outer pocket is accessed from the top and has a cover flap that is secured with Velcro. This where you'll likely store your iPad (as long as it's not in a thick case), or a manilla folder or two for some documents, or a magazine. There is a second flat panel that covers two-thirds of the outside of the main panel that is broken into two halves - an upper panel and a lower panel. By default, the bottom edge of the upper panel is "tucked" into the top edge of the lower panel. This allows both panels to act together as a single slip pocket that works great for sticking a boarding pass or other simple paperwork here. If the top panel is "untucked" from the bottom panel, this allows the telescoping tubes of a suitcase or folding cart to pass through and the panel serves to secure your bag to those tubes (especially when this FLAT CAP REAR is attached to other modules to form bigger bags like the B2 COMPUTE, B4 SWIFT or the B7 FLIGHT). Then, when you're done putting your BrightLine Bag on top of your suitcase, you can just "tuck" the top panel back into the bottom panel and it becomes a slip pocket again.
The B0 SLIM comes with a SHOULDER STRAP, and also a SLIM HANDLE KIT. (Note that the B0 does not include a MAIN HANDLE - it isn't necessary, and there is no place to connect it anyway.)
The SLIM HANDLE KIT consists of a SLIM HANDLE, two ADAPTER LOOPS, and four D3 CLIPS. This SLIM HANDLE KIT will be necessary in order to carry the B0 SLIM since there are no 1-inch quick-release clips for the Main Handle or SHOULDER STRAP on the B0. Follow the included instructions and you will be able to install two D3 CLIPS to allow the use of BOTH the SLIM HANDLE and the SHOULDER STRAP. (The remaining two D3 CLIPS are spares.)