describe: PREMIUM MATERIALS: The exterior of the cooler bag is made of high-density waterproof and stain-resistant Oxford fabric, which is durable and easy to clean. The interior lining is made of PEVA foil and filled with 6mm EPE foam for excellent heat resistance. LARGE CAPACITY: The cooler bag is large enough to hold the essentials needed for a family picnic without being bulky. Perfect for camping, hiking, BBQing and more. Outside Pocket: The bag features a wide opening for easy loading and unloading. There are 2 side mesh pockets to store drinks, bottles or even umbrellas. The bag also has a deep front pocket for candy, napkins, keys and other small items. Portability: Designed with padded handles and detachable shoulder straps, it provides multiple carrying methods and is easy to carry. It also folds flat for easy storage. Product size: small size: 26*19*21, 480g, medium size: 30*23*23, 500g, large size: 35*28*28, 700g Packing contents: 1 piece of thermal insulation bag