Good for having in the car or in a bag for a long distance travel. It does not replace the regular mate, for me at least.
I like it. It's easy to use. However, I have to make an effort to sip it. Not as easy flowing as the regular bombilla.
That being said, it is a nice and cool thermo to have and use in a long distance travel. I wouldn't use it as my regular mate.
Yerbas are ok. Also easy to use. The box loses a lot a yerba powder so careful with that.