small, cylindrical shape black, white, or grey in colour rubber or foam material small loop at one end for inserting into the ear stem at the other end for adjusting fit may have a cord attached
earplug which has small, cylindrical shape earplug which has black, white, or grey in colour earplug which has rubber or foam material earplug which has small loop at one end for inserting into the ear earplug which has stem at the other end for adjusting fit earplug which may have a cord attached