our son for some time already takes exclusively the pacifier of MAM (for 0-6 months). At night, however, he had trouble finding his pacifier. Since he was a poor sleeper anyway, that has brought his (and our) nights addition mess. With the brilliant Night pacifiers but rest is then eventually turned around. For four weeks, he falls asleep by now. We had immediately ordered a second double to go with four dummies in bed on "the safe side". Whether it is now exclusively on the pacifiers that he now sleeps through I can not say, I just know that it him now to succeed at night to calm himself because he just found his pacifier. How many hours lasts the luminosity, I can not judge, because I only see the morning pacifiers again when awake wird.Dann they shine but only faintly. Shortly quality: this is used well, as with the regular MAM pacifiers. Another practical feature is the container which is also suitable for sterilizing in the microwave. Conclusion: In our case, these five euros were a very worthwhile investment