Why It's CoolThe roof-rack lashing system is integral: Strong shock cords run along both sides of the bag. Wrap 'em around the rack and fasten them to the bag. Also with roof racking in mind, Kiva supplies a rain cover. » Big Mouth takes its name from the thin aluminum rods that surround the opening to give it shape and keep it agape during packing. » The entire underside of the bag is a separate 1,500-cubic-inch compartment that's perfect for stowing clothing or isolating an arsenal of footwear. Two exterior pockets are handy spots for grab-'em-fast items.Hmmm . . .The webbing that wraps Big Mouth's "lips" failed my test haul, exposing the rods, although not the contents of the bag. » The Big Mouth cries out for compression straps; the load shimmies like crazy.