Pretty much trouble for quite a little milk

My sister has tested this breast pump and found it actually quite good, and you can not compare an electric breast pump.
The silicone paper is great pumping designed thus quite pleasant. Of course, the effort is a point which can be a manual breast pump against an electrical always look old ... And then comes the effort for very little milk, which is but become better! My sister says that it depends on the state of relaxation.
What the pump but is really handy, being on the go! For this they use it now. But large amounts of milk she pumps continue from home with their electric Medela pump.