An important feature of course is that the bottle is BPA-free and the suction still is soft to suck, so it in the mouth of these also adapts well. This works for our daughter also really good and she is having her tea very hard and seems to have no problems. A bit you have to optimize the positioning of the bottle or the angle.
The filling of the bottles fell very slightly, which is due to the wide bottleneck. Previous attempts to get the bottle lying down leakage, were unsuccessful. However, I look forward to later times, when you are testing something more lifelike by our daughter.
After using the wash bottle as with special detergent and sterilize it with water in the microwave, which the bottle can withstand very well. You do not deform even, as some of our spoon that you no longer than this may indicate.
So far we are very satisfied and use the bottle very industrious, so we give it 5 stars *****.