Laken"s stainless steel vacuum insulated Thermo Food Containers are champions at keeping your hot foods hot (up to 10 hours) and cold foods cold (up to 24 hours). These food flasks come at 2 convenient sizes - 34 and 50 ounce, with a carrying pouch and 2 or 3 PP food containers. Laken Thermo Food Flasks are leak proof, even for liquid (soup etc.)