Leakproof : Our lunch bag for men/women uses the thickened PEVA insulating line and seamless ultrasonic welding technology to prevent from leakage. The exterior of lunch box is made of waterproof nylon fabric,which is wear-resistant.Foldable Expandable : Top compartment of lunch box can be easily expanded with a simple zipper action. The original measure is 11.02*8.66*9.84 inch (L*W*H), storing 15L. And the expandable measure could be 11.02*8.66*11.42 inch (L*W*H),storing 18L. The main compartment can store fruits,drinks, beer, ice packs and so on. And you can expand the upper layer to meet your different storing needs.High Quality: lunch cooler bag has the reinforced bone to make the bag stand upright, so you dont worry this loncheras para hombres will be wrinkled. This loncheras para mujer also use the high-quality SBS zipper to extend the life of reusable lunch box. This double-deck adult lunch bag could keep your food cold or warm for up to 16 hours.Multi-pockets: There is a zipper mesh bag on the inside of the cover. This large lunch box has two side pockets, one is specially designed for paper towels,which is convenient for you to take paper towels at any time during the meal. The other side pocket can store water bottle or umbrella . The front pocket has a special keychain designed for easy access to keys. Another front large zipper pocket is designed for cutlery such as knives, forks, spoons and so on.Multiple Carrying Choices: Detachable and adjustable shoulder straps, comfortable handle allow you to hold food bag by hand or shoulder.women lunch bag can be widely used when you go to work/office/gym/supermarket. The recommended age grading is more than 1 year old.