I am very pleased with the fast delivery. The Aventsauger, are the only ones who adopts my baby. I have tried many different manufacturers, but the others are not accepted, and spat. I find the sucker very convenient because you can use them on both sides and you have to not only turn him before you put him to the baby's mouth. I think the design is also very stylish. Too bad I find, however, that you can not choose the color combination. I also think the caps on the go very practical, so you can always make the cover it when the vacuum cleaner is not in use.