The Titan 24 Can Backpack Cooler keeps ice up to 2 days! The interior features Deep Freeze® Performance Insulation with radiant heat barrier and triple layer Cold Block™ base and a leak proof*, easy clean lining with Microban® to help protect against bacterial odors and stains. The tough exterior is water and stain repellent and easy to wipe clean. The exterior includes an insulated front compartment, 3 pockets, a padded back with breathable mesh panels and adjustable, padded backpack straps. Check out our selection of reusable Ice Packs for an alternative to ice cubes. Read more on why Titan Backpack Coolers are the ultimate companion. *zipper is not leak proof KEEPS ICE UP TO 2 DAYS The 100% "Keeps Ice" test is an industry standard test that's used as an effective way to compare the relative performances of different coolers. The "real life" performance scenarios shown above are provided to help you plan your cooler contents based on the amount of time you will need to keep the contents cold.