Meet the Ninja FrostVault Go, drink and food's favorite cooler - now on the go. It's the only soft cooler backpack with a FrostVault Cold Dry Zone and ChillSeal Lid for two ways to all-day chill. Separate your chilled cans and fridge-temp foods so you don't have to worry about soggy or squished snacks trapped in the depths of your cooler. F) for hours.