Noise Reduction - Earplugs Are Reusable And Durable Hearing Protection, Made From Soft Silicone. They Reduce Most Noise And Help You To Get In Your Bubble. They Have A Noise Reduction Rating (snr) Of 25db To 35db.(please Note: The Sleeping Ear Plugs Can Block Some Noise To A Acceptable Volume, But Not Totally Silent) Safe Reusable - The Earplugs Are Made Of Super Soft Food-grade Silicone Material, Which Do Not Stick To Dust And Have A Delicate Touch, With Good Elasticity And Memory Function, And The Ear Plugs For Sleeping Noise Cancelling Can Be Pulled At Will Without Deformation. Ergonomic Design - The Silicone Ear Plugs Can Perfectly Fit Your Ear Shape Wont Fall Off Easily. Even If You Lie On Your Side Or Turn Over, The Sleeping Ear Plugs Not Easy To Slip Off And No Pain To Wear For A Long Time. Easy To Use - These Earplugs Are Easy To Insert And When You Wear Them Correctly, They Dont Stick Out Of Your Ears. They Come In 3 Sizes (s M L), If Your Ears Hurt, It Is To Take A Smaller Size. If The Ea