The product description for the Lunch Box Portable Insulated Lunch Container Set Stackable Bento Stainless Steel Lunch Container contains important information about this high-quality lunch box. As a product expert, I have provided specifications and tips to help you make an informed decision. From its thermal insulation feature to its durable stainless steel material and bento-style design, this lunch box is perfect for keeping your meals fresh, organized, and efficiently stored. Its design also makes it portable and stackable, making it easy to take with you on-the-go. Additionally, for your convenience, the lunch box comes in various sizes and options, including a bag for easy transport. Please note that for safety, the stainless steel liner should be removed before using the microwave. Also, keep in mind that the insulation duration may vary depending on different regions and temperatures. Lastly, please be aware that the color and size may vary slightly due to lighting and manual measurement.