Non-toxic & Soft Material: The earplugs are made of Super Soft and Non-toxic PU Foam (Latex free and PVC free). Slow Rebound Foam Earplugs will fit your ear canal comfortably. You may not realize you're wearing them. Great Noise Blocking: 31dB NRR(Noise Reduction Rating) and 38dB SNR(Single Number Rating). They are two different rating systems. They are different because the way they are tested is different. Multiple Uses: The earplugs are great for Sleeping, Working, Studying, Travel, shooting or any environment you need quiet. Package Contents: 60 pairs + 1 waterproof silicone ear plugs. It is convenient and easy for you to use for a long time. One pair reusable silicone ear plugs with one carrying case for gift. Waterproof carrying case is convenient for you to carry earplugs at anywhere. LYSIAN Ultra Soft Skin Color Foam Earplugs 60 Pairs with one pair Resuable Silicone Earplugs and one portable case , 31dB NRR Upto 38dB SNR Ear Plugs, Comfortable Ear Plugs for Hearing Protection, Sleeping, Snoring, Work, Travel and All Loud Events