Anyone who has been to an outsie BBQ in the extreme heat of the west coast will know that keeping your beer ice cold on a hot day is nearly impossible.   I should say, "was nearly impossible".  Beer Bottle Koozies are available in all different colors and sizes and can keep your drink cold under even the harshest of conditions.  This zipper up cooler-to-go is perfect.  It fits nearly all beer bottle sizes.  I also found that this is a good way to hide what you are drinking from other people!  Is it soda?  Snapple?  beer?