Pros: Keeps things so hot or so cold for SO long!
Cons: I only have one
Oh man...I cannot tell you enough how much I love my REI Bullet Bottle. It's amazing. I love it. Why, you ask? Let me tell you.
Well, first of all, it's made of stainless steel so no leaching plastic for me. But it also means that it's quite tough. I've accidentally had it roll from desk to floor a few times, and there's only one slight ding in the cap. Other than that, it's shipshape.
Second of all, it is like magic. Literally...it's like magic. I usually use mine to keep my coffee or tea hot in the mornings on my way to work. So here's the routine...I get my coffee/tea/hot beverage of choice around 8:30. Then I hop on the bus for half an hour till I get to work. Then I sip on my hot beverage for the next few hours. It stays really hot for hours! In fact, this very moment, it's 4:25pm and I'm still sipping (hot) tea I bought this morning. And let me tell you something else! One day, I didn't finish my tea. I just left half of it bottled up on my desk. 24 hours after I had gotten the tea poured into my bottle it was still warm. Seriously...that is magical.
So I know I said I mostly use mine for hot drinks. Well, one day, I left my bottle with a few small ice cubes and cold water in the car, in the hot sun, for a few hours. Still cold!
The other great thing about the bottle is that the outside doesn't get hot or cold, so there's no risk of burning (or freezing) your hand. And you've also got the lovely option to pour your beverage from bottle to glass (you just partially untwist the little black cap at the top - that way you don't risk spilling all over the place).
Well, I'll stop gushing about this bottle now. But I just have to say, it really is quite amazing. And Deej can certainly attest to the many times I've made him put his hand over the steaming mouth of my Bullet Bottle hours after I've come into Huddler HQ (because I like to share my amazement).