1. Size: Due to the exact size ( 25*21.5*9cm / 9.84*8.46*3.54in ), the square compartment is roomy enough to fit a varity of bento box. A big front pocket and side water bottle net holder is nice for children's snack, cards, water bottle, napkins or towel. 2. material: Made with durable 600D oxford fabric to prevent ripping and ensure maximum durability, keeps the exterior of the lunch box waterresistant, dirtproof and durable.Equipped with a soft internal aluminum lining, this lunch bag is also easy to maintain and clean. Simply wipe with damp cloth to clean! 3.Keep Food Fresh/Cold/Warm: Thermal Insulated Keep your lunch, food, snacks, and beverages cold with 5mm pearl sponge and aluminum foil layer. Designed to keep your meals fresh and warm/cool for hours. 4.Makes Your Life Easier: The comes with a handle for convenient carrying and it can be adjusted, allowing children to take it as a tote bag. also with adjustable shoudler strap for more convience. Dual reinforced zippers for easy opening. Wide Open Design on the side allows you to place it smoothly into your lunch box. Safe and easy to carry.