Swimming Ear Plug with Cord-Red is made with a silicon rubbermaterial to give a gentle effect on ears. It enables a great sealing to preventwater from entering into the ear canal. It is helpful to low down therisk of ear infection. Swimming Ear Plug with Cord-Red is a non-irritating andnon-toxic material which can be used for a longer time. It is easy to sterilizedby boiling in water.