Feature: 1. Stainless Steel Material: Each container uses food grade stainless steel (inner) and PP (lid handle). BPA free, safe, non toxic, no taste or smell is retained, so you can use it over and over again. 2. Insulation Technology: Vacuum insulation and seamless welding technology can maintain the maximum temperature no matter hot or cold. Preheating or precooling before use will result in better insulation. 3. Leakproof Design: Our insulated food containers come with leakproof lids. Thanks to the excellent leakproof design, you can easily take your food or soup anywhere without risk. 4. Heat Preservation Effect: The lunch box can generally be kept warm or refrigerated for 3‑4 hours, and the heat preservation rice bag can be kept warm for 4‑6 hours, which is almost twice as long as the others. 5. Ideal for Gift: Thermal lunch container is suitable as a gift for family, neighbors, friends and colleagues on any occasion and festivals. You can enjoy home made delicacy for a healthier eating style! Specification: Item Type: Stainless Steel Thermal Lunch Container Material: Stainless Steel Capacity: 1.0L Color: As Pictures Shown Weight: Approx. 419g / 14.8oz Application: Students and Office Workers Use. Package List: 1 x Lunch Box Outer Part1 x Liner1 x Cover