Insulated Cooler Funtion: This lunch backpack with lunch compartment can keep food and drinks cool or warm for about 2-4 hours. The high quality insulated layer of backpack lunch box keeps the food fresh and warm, easy to clean and storage, can be used as laptop backpack, work bag, laptop backpack for work, office, picnic, hiking, camping, cycling, other outdoor activities and daily life use. Dimension of the cooler compartment: 11.5 x 7.4 x 8.6 inch. Large Capacity: The work backpack has one separate thicker padded laptop compartment to hold up 17.3 inch laptop as well as 15.6 inch, 15 inch, 14 inch and 13 inch computer, spacious main compartment is roomy for daily necessities and tech electronics accessories. Many pockets can accommodate lots of travel accessories, personal toiletries and easy access essentials.