4-layer premium material construction The surface uses high density Oxford fabric for durability and easy cleaning. A 6 mm EPE foam layer, non-woven fabric and a PEVA lining form a waterproof and leakproof structure using a seamless hot pressing process. Keeps food or drinks warm, cool, or fresh for more than 6 hours. Metal zipper ensures strength and durability. 15 L capacity and size Dimensions: L 31 cm x W 19 cm x H 23 cm. Capacity 15 L, large enough to store 24 cans of Coke (330 ml). The main compartment fits a variety of bento boxes, sandwiches, salads, snacks, fruits and drinks. It includes a large front pocket and two side mesh pockets. Suitable for office, work, picnic, beach, and travel. Waterproof and easy to clean The food grade PEVA liner is water and dirt resistant for durability and waterproofing. Even when filled with water and ice, it does not leak. The inner PEVA is easy to clean by wiping with a damp cloth, returning it to a like-new state. The cooler bag is durable, wear-resistant and reusable for a long time. Portable and easy to carry Wide opening for easy loading and unloading. Two side mesh pockets store drinks, bottles, or umbrellas. A deep front pocket holds tableware, napkins, keys and other small items. Comes with a sturdy handle and an adjustable padded shoulder strap for comfortable, convenient carrying. Use scenarios Office lunch and commuting, picnics or outdoor gatherings, and beach trips or travel.