Feature: 1. DOUBLE LAYER VACUUM INSULATION TECHNOLOGY: With double layer vacuum insulation technology, it can realize long lasting insulation effect. For better results, please pour hot or cold water into the food jar to preheat or pre cool it for 1‑2 minutes before putting in the food. 2. MULTI FUNCTION DESIGN: This insulated food jar comes with 4 bento boxes to carry a variety of soups or dishes so you can enjoy a richer, more nutritious lunch or dinner. 3. SAFETY SEALING DESIGN: Equipped with a sealing silicone ring, it can effectively prevent food from spilling. It also has a venting valve that can be gently pressed, making the bento box easy to open and convenient to use. Although there is no risk of food spillage, shaking and inverting is not recommended. 4. EASY TO CLEAN: It is designed with a wide mouth and the interior has been polished to give it a smooth surface that is easy to clean. Please dry the lunch box after each cleaning and store it properly to ensure long lasting results. 5. FOOD GRADE MATERIAL: The closure lid and carrying handle are made of food grade PP material, and the jar and lunch boxes are made of 304 stainless steel, which is safer and more reliable to use. Specification: Item Type: Stackable Insulated Bento Box Material: 304 Stainless Steel, PP Weight: Approx. 1884g / 66.5oz Insulated Jar Size: Approx. 13.5x29.4cm / 5.3x11.6in . Package List: 1 x Insulated Jar4 x Stackable Bento Box1 x Spillage Prevention Cover1 x Strap