Stainless Steel Airtight Lunch Box || Tiffin For Kids With Clip & Lock Lid || Compartment Lunch Box with Stainless Steel Case - 1 Piece. This lunch box features an amazing and fantastic design with locking system & Airtight lid. Made of high quality steel. 4 Side lock and lock style airtight lunch box. Wash thoroughly before first use. Hand wash. Open the lid before putting in microwave. Easy to use and clean. It is safe for children & is leakage proof.