PRESENTATION OF THE PRODUCT product is packed in plastic box which have 4 pair of different size caps, the smalest size is XS then S, M and L sizes. you can use the required cap. WAST RANGE OF USE this device can be used in different purposes. you can use while sleeping, reading, swiming or in noisy anoing arias to reduce tention and stress. SMOOTH AND COMFERTABLE IN USE Made by silicon which is very smooth in use comferable while using. have four different sizes cups which you can change and adjust accornig to your ear. NOISE REDUCTION AFFICIENTLY Reduces the noise afficiently by -33 db.