No fear of spillage, and no need for reheating. (PS: If you want a thermos to keep your lunch warm, check out the best food thermoses.) $50 at Amazon.com $48 $43 at Walmart.com There are two ...

The thermos doesn’t need to know if your food is hot or cold, then, because the system slows it from being heated or cooled, ...

The best vacuum flasks keep drinks hot from morning through to night. We've reviewed the best Thermos flasks, along with vacuum flasks from Chilly's, Stanley and Hydro Flask, and cheaper own-brand ...