Flesh Color Foam Ear Plugs for Sleeping – 60 Pairs 38Db SNR Noise Reduction Earp
They are different because the way they are tested is different. Ultra Soft Skin Color Foam Earplugs 60 Pairs with one pair Resuable Silicone Earplugs and one portable case, 31dB NRR Upto 38dB SNR Ear…