Insulation: The lunch bag is made of thermal insulation material that can keep food and drinks cool or warm for more than 5 hours. Additionally, the built-in 6mm thick EPE foam provides excellent protection for your containers, food and drinks, so you can safely place food directly into the bag. LARGE CAPACITY: Dimensions: 43cm x 3cm x 23cm. The adult lunch box has a maximum capacity of 15 liters, which is roomy enough to hold 24 cans of Coke (330 ml) or your lunch such as sandwiches, salads, snacks, drinks, fruits, etc. Perfect for the office, work, picnic, beach or travel. Leak-proof and waterproof: The exterior of the men's lunch box is made of 600D waterproof and stain-proof Oxford fabric, which can be cleaned with a quick wipe and is durable. The waterproof outer material is stain and abrasion resistant, protecting the lunch bag from splashes and rain. Safe and durable material: The inner lining of the cooler bag is made of PEVA film, which is stain-resistant and wear-resistant, and will not melt easily when the lunch box holds hot food. High-quality and durable two-way zippers ensure they are easy to open, tear-resistant and durable. PRACTICAL AND PORTABLE: The lid of this cool bag opens, thanks to the sturdy two-way zipper, and the wide lid opening makes packing easy. The insulated lunch bag features padded shoulder straps and handles for easy portability. Perfect for your office and picnic needs.