I frequently travel for business, and occasionally want to carry a bottle of good spirits I've found home with me. I often travel on Southwest, which has the following luggage policy: "Alcohol (wine and liquor) in checked baggage must be securely packaged in a leak-proof bag with adequate professional packaging designed to fit the proportions of the bottle to prevent breakage." I have checked bottles without obeying this, surrounding them with clothing for padding, but I would prefer to conform to guidelines --- it's only a matter of time until some luggage handler is too rough with my soft- sided travel bag, and a bottle breaks. One idea: a hard-sided travel case, e.g., http://store.thewinebag.com/encore.html . (I don't think neoprene sleves would provide sufficient protection.) But I would prefer something smaller or collapsible, for those trips when I do not find anything worth bringing home. I suspect no such case exists, but hey, there's no harm in asking! Any thoughts?