The most troublesome thing is what to eat for lunch today? I believe this is a big deal for many people! Even though 58% of Americans work from home, they still need an hour break for lunch. Do you cook it yourself or order takeaway? What to eat is enough of a headache, but still want to order takeaway or cook it yourself? We sell 500,000/year bulk thermal lunch bags to the U.S. every year. Whether you cook it yourself or order takeaway, healthy and fresh food can always satisfy your stomach.     How Long Does Insulated Bag Keep Food Cold? An insulated lunch bag can stay cold for about 3 to 5 hours with an ice pack, but even that isn't foolproof. You should always try to put food in the refrigerator as soon as possible, otherwise it is risky to eat. Here's some information on how to choose a custom lunch bag and store food. The chart below helps you get an idea of how long your lunch will stay cold in an insulated bag and order bulk thermal lunch bags.     Which Foods Are Perishable? Are any of these foods part of your lunch? Get your bag into the fridge! They’re all perishable and should be kept at a cold temperature. According to Julie A. Albrecht, a food specialist at the University of Nebraska-Lincoln, the full list of perishable foods includes: Meat, Poultry, Seafood, Eggs, Raw Fruits & Vegetables, Dairy Products. Be sure to pack your lunch the night before if you are planning on having any of these foods for lunch. It gives your food a head start in staying cold.       How to choose and get price of bulk thermal lunch bags? First, define the product. The product involves important parameters such as appearance, material, function, size and so on. Second, product design. It is also important to include the product logo. The logo of a product represents the brand, so if you are not confident in your product design, welcome to inquire with us, we have a professional design team that can give a satisfactory answer within two hours. Third, the material of the foldable insulated lunch bags. This is the biggest factor in evaluating the thermal insulation of a thermal bag. If you have any ideas of custom lunch bags, please send us inquiry we'll respond within 2 hours.