Matrix Insulated Casserole (Milton)Leak Proof: Yes; Retain temperature: Yes; Double walled Inner stainless steel casserole keeps food hot and fresh for hours. This Product Is Under 1 Year Warranty From The Date Of Retail Purchase Against Any Manufacturing Defects In Material And Workmanship. The Warranty Does Not Cover Damages Resulting From Accidents, Mishandling Or Tampering With The Mechanism. Warranty Valid Against Producing Original Bill Endorsed By Seller. Made from durable