The lunch bag is made of diving material, can keep food cold or warm for a few hours. Size is 11.81″x 12.20″ x 6.30″. The zipper ensures your bag can be opened and closed smoothly even when it’s full. It’s not only can be used for office or school lunch bag, it also can be used as picnic bag, sundry bag or shopping bag. It has heat, cold, fresh preservation, can be used to pack frozen food, hot pot dishes, frozen drinks, ice cream, etc. Your company’s LOGO can be printed on the outside for better publicity. Your inquiry is welcome. 1000PSC or more can go to sea price more favorable.