FrostVault Technology: Built-in Cold Dry Zone keeps food dry separate and at fridge temp for hours. Holds ice for up to 24 hours perfect for day trips and adventures. ChillSeal lid: Simply open and close to quickly grab items or fully zip lid for leakproof protection. Holds up to 24 cans (no ice) or 16 cans + ice - plenty of room for all your favorite drinks. Durable heavy duty design for lasting performance. Padded back panel and ergonomic backpack straps are designed for all-day comfort. Includes (2) 0.8lb ice packs.