MILTONThermosteel Flip Lid 500, Double Walled Vacuum Insulated Thermos 500 ml | 16 oz | 24 Hours Hot and Cold Water Bottle with Cover, Stainless Steel, BPA Free, Leak Proof | Silver

I recently purchased the Milton Thermosteel Flip Lid Flask 350, and I must say, it has exceeded all my expectations. If you’re looking for a reliable, durable, and highly efficient thermos, this is the one to get. The 18/8 stainless steel construction is impressive, ensuring not only a sleek and modern look but also exceptional durability. Unlike other thermoses that start showing wear after a few uses, this one remains in pristine condition even after daily use. The leak-proof design is flawless, and the lid secures tightly, preventing any accidental spills in my bag. This thermos truly lives up to its promise of keeping beverages hot or cold for several hours. I tested it with hot coffee in the morning, and by noon, it was still warm enough to enjoy. The insulation technology is outstanding and makes it perfect for long commutes, office use, or outdoor activities.Pros:Premium stainless steel buildExcellent temperature retentionLeak-proof and easy to cleanCompact, lightweight, and travel-friendlyComes with a protective carrying caseCons:A larger size option would be great for those who need more capacity

Metal thermos that should provide decent temperature retention. I think this is designed for decanting contents to the cap rather than for drinking through the spout, but the latter should be an option. I assume it will hold up well for travel purposes, and it is a nice, small size. It will be a few months before I put it to the test surviving in my bag on a real trip.

One of the best stainless steel cup, keep your tea, coffee or water in the right temperature, very durable and great color. easy to carry and easy to clean.

This product works well. I had tea in it from about 2:30 am until about 5:21 pm and it was still at a good temperature to enjoy. It was like I'd just put it in the microwave and pulled it out at the perfect temp. I think having it in the carrying case it came with helped too. The downside is that the lid leaks. It seems unavoidable because of the design. There are a lot of grooves on the inside meant to keep heat in, but fluid and steam gets trapped in the crevices and drains down when you take it off. So that's why it leaks. If your mindful, it's not to much of a problem. I would buy this again if needed.

Perfect work thermos. Nice size and keeps your coffee hot.

Great smaller size to fit in a purse or lunch bag. It came very quickly. Very handy carrying case. Other reviews said it leaked, mine did not. Really keeps liquid hot a long time.

It does its job very well. The hot water was hit for 24 hours. Quality material.

The main reason I bought this thermos was the pour spout. It's much handier than unscrewing the lid. It does leak a little, maybe it comes out through the spout? Not sure, but I don't travel with the thermos, I just use it to store hot water for later use throughout the day, so I don't have to fire up the tea kettle again.The product description says that it keeps the contents "hot" for 24 hours with no heat transfer. Not sure what temperature is being used to define hot, but I conducted readings over several days using a Pyrex digital meat thermometer. The first measurements I took were from first filling the thermos with boiling water, screwing on the lid and cap, and taking readings every two hours. I was going to take the readings by inserting the probe through the pour spout, but it's not a straight passage through, so I had to unscrew the lid each time.For the first six hours, the temperature would drop by about 10 degrees every two hours (5 degrees per hour). And it was apparent that heat was transferring out through the top (maybe because the lid isn't as insulated as the rest of the body?) because the cap cup was warm to the touch. So after six hours, the temperature dropped to about 174° F. Still hot enough to brew some tea, or coffee from grounds.After the first six hours, the temperature drop seemed to taper off to about 5 degrees every two hours. So at about the 12 hour mark, the temperature was around 156°F. At the 24 hour mark, the temperature was 131°F. I'm guessing that if you use the thermos to store a beverage, like coffee, this should be hot enough (although fast food places serve coffee around 170°F).In case the process of opening the lid to take measurements lets a lot of the heat escape, I also conducted a survey where I took readings at only the 12 and 24 hour mark. In this survey, the 12 hour temp was 159°F and the 24 hour reading was 136°F, so slightly warmer, but not significantly.I guess 131°F after 24 hours would be technically hot. That is, if you put a hot beverage like coffee in there, it would still be pretty hot. But if you use it to store hot water for later use (like I do), you could probably make a cup of hot chocolate or instant coffee. But it seems to be too cold for brewing tea, or brewing coffee from grounds.