Features: 1.Environmentally Friendly:Made from high quality materials and constructed of 600D material making it extremely robust, yet lightweight, PEVA waterproof. The interior adopts an environmentally-friendly aluminum film liner, no harm and it's safe for yourfood and health. 2.Keep Temperature:The environmentally-friendly aluminum film liner with a zipper on it, which is waterproof, moisture-proof, heat-insulating. Thicker thermal walls create a fully insulated bag so that food and drinks can be kept warm or cool and fresh for longer. Food and beverages can keep cool or warm. 3.Practicality:Can hold enough foods, suitable for picnics and office meals, office snacks, fruits, desserts, storage of drugs to reduce bacterial intrusion, baby milk powder preservation.The function of heat preservation and cold preservation make it suit the need of both winter and summer. 4.Practical Design:The main compartment has a zipper to prevent items from falling, a mesh pocket on the front for storing small items such as mobile phones or keys. It also includes an integrated adjustable shoulder strap. 5.Lightweight and Portable:It can be used as lunch bag, Picnic bag, sundry bag or shopping bag.