“I got the small one, it's perfect to take around.
It's well designed, it's easy to take apart and assemble again. The closing mechanism is super reliable and durable (not the flexible kind, has a mechanical junction).”
“I enjoy the training it gives me to shake the shaker in 10 minutes. Still, without a plastic ball inside it doesn't blend the powder with the water very well.
It's also difficult to wash by hand when you don't have the time to use the dishwasher.”