Inner bowl is made out of 18/8 quality stainless steel
Middle layer is insulated using good quality PUF
Microwave safe plastic container
Every product is unique, just like you. If you're looking for a product that fits the mold of your life, the ASIAN Royal 3 Highly Insulated Thermo Tiffin Carrier/Lunch Box/Tiffin Set/Tiffin Box/Lunch Set (Blue) is for you.