The product is correct. Personally we had an Advent before it and the cup was much more adherent. While restraint is not maintained throughout the process, the milk can escape a little (soon is overcome that). In addition, my wife gets its milk in the evenings and during that time, we watch TV. With Advent, we could still hear the TV but here the compressor noise quickly slap on the system. The sound resembles the same sound made when a blood pressure like compression. Imagine the noise to 30 times a minute, soon annoying ... If not the product works pretty well. the potty is ridiculously small and therefore useless.
