Come and see our amazing products. This item is made of durable high quality 600D Oxford cloth and nylon ribbon lunch cooler. The internal materials is professional grade PE foam, and with a unique heat sealing zipper. This lunch bag can keep food or drinking cold or hot even after several hours (The insulation time depending on the outside temperature, at least 4 hours),And is suitable for daily needs absolutely. Additionally equipped with a shoulder strap, No matter go to work or to travel, it can be easy to carry. It can also be folded when doesn't be used. Pls confirm with us about the packing info, stock status and exact production time before placing your orders.