The sound was the next item that impressed me. These are an 8. My husband wears a size 10. The shaper is well put together and holds you in place. Easy to install, looks good on vehicle. Ink: After comparing the various manufacturers ink cartridge options for ink jet printers, Ive found them all to be comparably priced, but I prefer HP, because (1) it requires only two cartridges (black & color), whereas other printers often require one black and three or more color cartridges*; and (2) the HP Instant Ink program (which is optional) is cheaper and extremely convenient. They are loud enough but if you really like to crank your set up high the A40s are better for that. I ABSOLUTELY recommend this bag. Definitely does the trick. The base isnt wide enough, which makes it very tipsy.