MiiR, 360 Traveler, Stainless Steel Double-Wall Vacuum Insulated Tumbler

飲み口の部分が分解清掃不可のため衛生面で不安がある。 説明書に煮沸・漂白はするなと書いてある。 開閉部が狭く普通のスポンジなどでは内部の洗浄は困難。 いや、無理である。 コーヒーやジュース類などで常用することは無理か？ 水専用のボトルと考えたほうがよさそうだ。 残念である。

I don't recommend this item for the following reasons: - The item I received was used, scratched from the outside and dirty from the inside. - The open and close mechanism keeps getting stuck on the fully open or fully closed position. - Its not always leak proof because the seals move.

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.

Lid stopper has weak point at the stem. This broke on me twice, first time while washing in the sink, less than 12" drop and the stopper broke off. Too bad, I really like the size of this slim tumbler vs other brands, but will likely switch because of this. I can't keep buying new lids.

Keeps water cold even on 80F hot days trapped in a car, 8 hours later. Amazing. It is hard to tell if it's open or not and figuring out the correct pop sound isn't intuitive or easy. It does seal and not leak once closed up. Lightweight. Can drink from any side. Worth the value for me even if it means popping the top a few times to make sure it's open or closed; Far better than it spilling in my backpack.