3M PELTOR X1A Earmuffs (3M) - Domestic Genuine Product Soundproofing Earmuffs Earmuffs Muffler Headphones Headphones Sensory Overload HSP Construction Soundproofing Construction Soundproofing Measures Due to mild autism, I find loud noises overwhelming. I used these a few times, but the soundproofing effect was too strong for me. I will pass them on to someone who needs them.