Packed the carrier with a deep dish lasagna on the bottom, and a regular 9 x13 casserole on the top. Went to church service and then unpacked for church lunch. Both dishes were still hot, hot, hot (with the bottom one being a little hotter). I have not had this type of success with other carriers, and a few people expressed surprise that the food was still hot. Looking forward to using it again. I suspect that packing it full, while the food is still pretty hot, is key. I plan on buying a couple as gifts for my daughters.