Inside the bag is durable aluminum insulation lining which is easy to clean and BPA free. Apply to summer and winter use. Our compact yet practial lunch tote can easily fit all your snacks, drinks, sandwiches, fruit or vegetable. You can enjoy a healthy and mouth-watering home-cooked meal at school, office or picnic. Stylish design, suitable for all groups. It can be used as lunch bag, picnic bag, bento bag, sundry bag or shopping bag. Best quality products and services are provided, so if you have any problem about this insulated zipper lunch bag, just contact us for refund or return.