This travel tea tumbler is sweet! It does the job mixing matcha (as well as other tea/chocolate/protein mixes) and has a nifty pressure release valve so the unit doesn’t leak or explode in your face. I love it even as a regular tea tumbler as it’s light weight, durable non glass and it can roll around my purse without leaks or threat of air expansion.
The big problem with this travel tumbler is cleaning it (so many nooks and crannies in the froth attachment thing) and if you use it with hot milk you need to be extra careful. I use soy milk and it froths up a lot, so it goes past the safe line and will hiss out the button if you aren’t careful.
Full in depth review on Oolong Owl http://oolongowl.com/davidstea-matcha-maker-travel-tea-tumbler-review/
