Made of food-grade materials, this portable insulated lunch container keeps your food warm for up to 3-4 hours. It features a leak-proof design with double silicone seals and a clamshell exhaust valve. With two sizes and an insulated lunch bag, it is ideal for portion control and convenient for enjoying homemade food at work or school. Perfect for men, women, and children. Features 1. Food Grade Material: Stackable lunch boxes is made of high quality food-grade safe PP plastic and durable 304 stainless steel, no odor retention, so you can use it without any worries. Unique design, fresh and elegant style, perfect for men, women and children. 2. Superior Temperature Insulation: The vacuum insulation and insulated bag provide up to 3-4 hours of warm retention; nearly twice as long as others. NO more cold lunch. NO more microwave. The vacuum insulation provides the right temperature to keep food stay warm and healthy. 3. Leak-proof & Convenient Design: Each lunch boxes comes with a double silicone seal to lock in freshness, leaks and odors. There is a clamshell exhaust valve on the top of the lid, the hot air can be exhausted at any time, which makes it easier to open the lunch box; there is a handle on the top of the lid, which is convenient to carry and move. 4. Lunch Container Set: Two sizes, two large and two small, to meet your different needs. Small(420ml, 4.522.56 inch), Large (620ml, 4.523.54 inch). With an insulated lunch bag, enhanced insulation, it is very convenient to carry out. Convenient for you to enjoy tasty homemade food at school or at work or going out. Great for store soups, fried rice, pasta or other hot food; Can also be used to store cold food such as salads, fruits and more. 5. Ideal for Portion Control: Wrap it with ribbons, and give it to someone you love so they can enjoy homemade delicacy for a healthier eating style. Specification Material: Stainless steel, PP Color: White, Blue, Brown Size: Large: 12 x 9 cm, Small: 12 x 7 cm Weight: 565 g Capacity: 420 ml, 620 ml Package Include: 2 Lunch Container(with Knife and Fork) 1 Lunch Bag