Description de chez Amazon USA : - Intended to extend the life of the woodwind mouthpiece<br /> - Thin but padded patch adheres to where the mouthpiece is blown into; prevents indentation made by front Teeth<br /> - Clear material to match with any mouthpiece; not easily detected<br /> - Does not leave behind a residue once removed and cleaned<br /> - Comes as a pack of 4 patches<br />