Review on 24 Oz Insulated Food Jar - Keeps Hot/Cold Foods Fresh For Office, Picnic & Outdoors - DaCool Stainless Steel Vacuum Lunchbox by Mike Mahfood

This is a great school thermos. Food has stayed hot within a 5-6 hour window. My daughter loves that is has its own spoon. I gave it 4 stars because the vacuum seal/valve in the lid doesn't work and liquids do slightly leak out of the valve. The first day we received it, the valve worked but it created such a tight fit my daughter couldn't open it by herself (she's 11). After a few attempts to see how loose we could screw the lid on where she would be able to get it off, it stopped working and now if you turn the thermos on it's side or upside down, liquid will slightly drizzle out of that hole. I'm not sure what the point of that was anyways. Clearly it functions well for keeping food hot and frankly I'm glad the valve doesn't work cause my daughter wouldn't be able to get it open by herself. We are keeping it, but for the cost, there are probably similar items out there that do just as good a job of maintaining temps for lower cost.