Specifications:Material: siliconeSize: 17mm * 14mmWeight: 60 gFunction: protective plugScope of use: Dustproof and noise-proofThe package includes:A 3 layer gray earplugA storage boxLets Through Lmportant Sounds-as opposed to outright noise cancellation,DONGSHEN filtered filter out out specific frequenciesguarantee that you hear your alarmno more muffled blocking as with foam plugsAlmost Lnvisible and Perfect Fitting- with double slats which adapt to your ear and block harmful noises effectivelytransparent material allows an unobtrusive usageeasy removable due to integrated pulling strapExquisite Package-the sleeping ear plugs come with an aluminum-box easy storage, waterproof rubber seal ensures their protection from moisture, dust, and debrisyou can hang it on your keychain and carry it around with you wherever you go