375 ML SMALL BATCH BOURBON WHISKEY | 94 PROOF This 375ml bottle of Garrison Brothers Texas Straight Bourbon Whiskey is bold, proud, and authentic. Homegrown and handcrafted from the finest ingredients, Garrison Brothers Boot Flask is the same award-winning bourbon whiskey you’ve always enjoyed or wanted to try, but now in a handy little bottle ergonomically designed to fit inside your most comfortable pair of boots.