Those
big-ass one-strap carry-alls that
bike couriers use to ply their daily trade. Waterproof, built to last, large enough to sleep in. If you're looking to purchase one, the two critical metrics are, "Does it carry a case of 24 in bottles?" and "If those bottles all break, is the bag tough enough that the glass shards will not rip through the back and pierce my
spine?" If the answer is yes, you've got the real deal. If not, you're being hoodwinked by some slick operator selling "
urban cultcha" who should be avoided at all costs.
Timbuk2, a SF company full of nice, young, entrepreneurial lads, will make you up one special with the colours of your choice.