LIMITED STOCK!!! Meet the BruMate Backpack Cooler. The world's best stainless-steel lined, leak resistant, backpack cooler with a tap. Designed to be small enough for most hikes and events, but big enough to carry everything you need for a day of fun, while making hauling your drinks a breeze. Holds 3 gallons of your favorite adult beverage or hydration you may need throughout the day!!