No Leakage Problem: Unlike traditional cooler bags, our insulated cooler backpacks are lined with upgraded thickened PEVA material, combined with seamless hot pressing technology to avoid leakage problems. Leak proof liner ensure that you can bring this lightweight backpack anywhere you want with ice, beers and drinks in it, mess freeLong-term Insulation: Insulated thickened foam and leakproof liner ensures excellent insulation performance, which will keep your drinks and food hot/fresh/cool. Absolutely perfect for camping, beach, picnics, hiking, travel, boating, outdoor games, and work45 Cans Large Capacity: ice chest cooler bag can hold up to 45 cans(330ml), can meet the need for 6-8 friends. Except for the roomy insulated main compartment for food and beverages, we have 2 side mesh pockets, 2 large front pockets and 1 zipper pocket on the lidWaterproof Oxford fabric, high-density foam, and leak-proof PEVA liner. Bonus a beer opener and a reusable bag for collecting trash. Let's take action to protect the environmentWaterproof and durable: beach cooler backpack is made of high quality oxford fabric and thick PEVA material lining with strong double stitching to support absolutely waterproof and tear resistant. We also provide excellent QUALITY WARRANTY, no quality concernsMulti Purpose: Designed with excellent insulation, our backpack cooler bag is a wonderful choice for all outdoor and indoor activities. It also can be used as a daily backpack, lunch backpack, perfect for work, beach, picnics, camping, hiking, fishing, boating, travel and so onJust Enjoy It: Say no to bulky, heavy, uncomfortable and difficult to carry around. Our thermal backpack cooler features breathable mesh back pads and ergonomic padded adjustable straps, which can relieve your back and shoulder pressure, making it a comfortable journey