Noise Reduction - Earplugs Are Reusable And 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 Without Deformation. Ergonomic Design - The Silicone Ear Plugs Can Perfectly Fit Your Ear Shape T 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 Earplugs Do Not Re