If you're like most bass anglers, you never get in the boat without a tube tied on, and if it's not a YUM F2 2ube, you're not fishing with the best. The F2 2ube is infused with the most effective attractant on the market (proven in an independent, scientific study by Mississippi State University), and because the scent is infused, it constantly and consistently releases attractant. The YUM F2 2ube comes in 20 unique and effective color patterns and is 4-inches in length.