1. : The exterior of the cooler backpack is constructed out of high density and waterproof 600D oxford fabric. The lining in the bottom section is hygienic and can easily be wiped clean, it can contain leakages and spills. 2. Leakproof : Our cooling backpack works effectively at keeping your drinks at their ideal temperature and don't need to worry of leaking. The leak proof liner combined with waterproof fabric means you can confidently fill our cooler backpack with ice, beer cans, and other drinks and take it anywhere you go. 3. Portability Versatility: The cooler backpack is not only an excellent insulated cooler backpack, but also a perfect lightweight gear. You can use it as a lunch backpack as well as a lightweight portable cooler for camping, beach, picnic, hiking, fishing, travel or other outdoor activities for both men and women. 4. Insulated Cooler Backpack: This backpack cooler has thermal insulation which is able to keep food and drinks cool and fresh for many hours, whether there is warm food or cool beer, the backpack will always keep them tasty.