And that was the most important to me! I already had 1 Cup and it was hardly a change in my mouse to remember, she has 2 Cup immediately accepted. There is sometimes a bit fummlig, pure push the inner liner and screw up. It's usually not a problem, but sometimes I try it and give 10x the cup then exasperated the father, who must solve the problem then ;-) But that's complain at a high level.
