About this product 【Large Capacity 30L】 Can hold 42 cans of 350ml cola. It also has an easy-to-open double-slide zipper on the outermost side for easy access. In addition, there are two storage mesh pockets on both sides, and a larger link pocket in the front. The large-opening main compartment is perfect for drinks, food, sandwiches, snacks, fruits, lunch boxes, etc. It also has a deep front pocket that can store essentials such as napkins, mobile phones, wallets, and keys. There is plenty of room to store rainwear, tableware, and other necessary equipment. This cooler box is ideal not only for camping but also for situations like leisure and picnics. 【Excellent Cooling & Insulation】 The box has a 3-layer structure. The outer layer is Oxford cloth, the inner layer is thick pearl cotton, and the built-in inner layer is high-quality PEVA, which effectively blocks external heat and maintains a low internal temperature for a long time. It can keep warm for 4-6 hours and keep cold for 6-8 hours. When combined with ice packs, the cooling effect lasts for 8-24 hours. 【Reinforced Handle】 Made of high-quality Oxford cloth, it is durable and waterproof. The inside is aluminum foil, so it won't leak even if the ice packs melt. It can be folded compactly for storage, making it easy to carry and saving space. It has both a handle and a shoulder belt, so it can be carried by hand or over the shoulder. 【Works in Various Scenes】 It is very useful in a wide range of scenes, such as picnics, outdoor activities, camping, fishing, barbecues, cherry blossom viewing, sports event viewing, and commuting. You can keep drinks and other items cold and fresh. This box is ideal for both summer and winter!