I saw these in my Sam’s Club. After seeing the 23 dB I said no thank you.These have an incredibly LOW reduction in sound rating at 23NRR. Probably one of the worst ratings for over the ear muffs that I have ever seen. Passive (meaning not whiz-bang hi-tech battery operated) muffs at $20 or so routinely provide 30db reduction (mine are rated at 33db and cost me $9). Once your hearing is gone, its gone.