Well, the sporting event we were so far (yet), but we have put him the protector when drilling and all was well, otherwise it went only with great roar, he is quite sensitive to noise, all the Mama halt. Also we have the guards put times and they really dampen very.
The strap can be adjusted quite easily, but then remain stable in the setting. Until 98dB kids are so well protected from noise. A great thing! I recommend, in good conscience, be happy to!