MiiR 360 Traveler, Stainless Steel Double-Wall Vacuum Insulated Tumbler - Leakproof 360 Lid for Easy Sipping on the Go; Perfect for Hot & Cold Drinks

I can put my tea a coffee in it and shake it and nothing ever leaks and I can carry it sideways and it keeps everything hot and it's easy to drink out of.

Revised - I figured out the flow/no flow thing by reading another person's review (thanks for that), so I went back to loving it. Today, when getting my stuff in the car to go to work (briefcase, purse, lunch, coffee thing, etc) I put it on the roof of the car, got my stuff in order and drove away. Guess what happened next.Yeah, that. At the first stop sign it slid off the roof of the car and I watched it tumble in front of the windshield, bang on the street surface and roll down the street. It's not even light out yet, and I'm running down the street after it. The little disk at the top broke off and since it was dark I was not able to find it. The reason I changed my review to 5 stars was that when I got to the office, I could do NOTHING until I got on Amazon and ordered a replacement. No consideration required. Now that's love. But just to be clear, the top broke because it hit the pavement, not because it's cheap. Totally my fault.Old review:I used this for basic office coffee commuting every day. I loved it! The size was perfect, the shape was pretty, It was perfect, until it wasn't. The way it closes is kind of unique, but it wore out after a little more than 2 months. I guess it's beyond the return window, so yeah...I actually liked it enough to buy it again knowing that it will only last 9 weeks, which is bonkers, but if you're a rational person you may want to keep looking.

Good purchase , size is perfect

Very nice quality as far as material and construction, and does a great job of maintaining beverage temperature for plenty long enough. The only two issues for me are that it can be hard to discern whether the drinking lid is open or closed just from looking at it, so you have to either make sure to pay attention and remember or try to drink out of it in order to know and make sure it is closed, and then that the fact that the entire ring around the lid opens and you can drink from anywhere around it; it’s a double edged sword since it is both convenient but also increases the risk of possible leaking, particularly when full. Overall it’s a very nice, quality travel mug that does keep beverages hot and cold quite well, but next time I would likely opt to try a different model and/or brand with a different one-handed operation model due to the couple of (in my opinion) drawbacks.

If you’re like me, aesthetics are equally as important and hydration. This bottle caught my eye with its sleek, matte black design, and simple construction. I loved the idea of having a 360 degree lid that can be sipped from any side. The only issue, however, is that with there being an opening all around the mouth piece, it’s easy for dirty and contaminants to get in there and you’ll be drinking those toxics unless you rinse the lid before EVERY sip. Otherwise, I love the bottle.

I travel on the train/uber to work and this is the perfect size to carry in hand and in my backpack. Hard to tell if I locked the lid without trying to take a sip first but no big deal. I also like that you twist the lid on vs the typical rubber seal so I know it won't leak. Happy with my purchase!

Initially loved this tumbler. It was the perfect size, felt good in your hand, and never leaked. I definitely treated it like the expensive (nearly $30) coffee mug that it is: gentle in transit, hand washing only, washing right after use and never letting it get gross. But within a few weeks the lid just broke apart. The small x-shaped plastic that holds the stopper against the rubber/silicone washer simply failed and the bottom broke off. Now it's a $30 cup.I would love to update this review if Miir sent me a new lid.

I love the shape of this travel mug. I can shove it into my back pocket if I need to, and it's easy to hold, even if I'm also juggling a bunch of other stuff (that's how my mugs get all dented and scratched -- from dropping them while trying to carry other things.) It also does a very good job of keeping my coffee hot. I like to sip my 2nd cup of coffee over the course of a couple of hours, and this cup is efficient enough to do the job.