Cooler Backpack Insulated Leakproof Waterproof Backpack Cooler Bag 30/45 Cans, Large Capacity Lightweight Travel Camping Beach Backpack Cooler Ice Chest for Men and WomenWaterproof 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 environment. No Leakage ProblemUnlike 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