My son (10 months) loves these pacifiers like. He never had any problems with the skin around the mouth, the holes in the pacifier can be nice a lot of air to the skin compared with other pacifiers. Also, because the edge is slightly curved outwards. Unfortunately accumulates on the shaft of the nipple very fast dirt, which is also very difficult to remove. There is a groove between the nipple material and the rigid plastic part. You can see the dirt, if you bend the nipple slightly. By contrast, probably helps only a pacifier of a single material ...