it actually works
so... you get two ear plugs one bigger and complete and the other one a bit smaller , for the smaller one you can use it in the office , in my case i am a programmer and i need a bit of silence for some usual sounds the smaller one does not allow me to block the sounds in my case if i put the bigger one i can't hear my own keyboard while i'm typing this , i cannot hear my dog scratching her ear , i cannot hear the sounds of the traffic outside of my home , or the AC , i can't even hear the fan of my computer (it is spinning 2400 rpm) if it starts to spin over 4000 i can barely hear it, if i need to read a book it is perfect, i just tested if i can hear when my phone vibrates and i cannot.  it works better than i was expecting and i'm satisfied with it,
Rating: 5 stars