I use the 3M OPTIME 105 ear muffs. The are around $17-$22 online. I sometimes also put a pair of headphones in then put these over top. Last week, there wer

I use the 3M OPTIME 105 ear muffs. The are around $17-$22 online. I sometimes also put a pair of headphones in then put these over top. Last week, there were some people grinding concrete right outside my office window. I ended up using the bright orange foam ear plugs then putting on the OPTIME 105 ear muffs. I could barely hear a thing.