The Igloo Quantum 55 Quart Cooler features the Cool Riser technology that improves the cooling performance by elevating the cooler body from the hot surface. Integrated locking loops in the lid and liner allow the cooler to be locked for better security. Reinforced swing-up handles with a tie-down loop allow for versatile carrying and loading. The integrated pouring channels in liner allow for easy purging of melted ice. To keep your drinks secure and handy there are four self-draining cup holders built into the lid. A fish ruler was molded into the lid that lets you measure your catch instantly. The triple-snap, leak-resistant drain plug allows easy draining of melted ice.