Comfortable and soft material to help you hold on tje headset・ avoid dropping when calling~<br /> <br />Size: Small・ medium・ large three numbers<br />Scope: Plantronics headset and Plantronics legendary PRO PRO + PRO HD PRO UC headset series<br /> <br />Package includes:<br />3 x Transparent silicone earmuffs (Size Large / Medium / Small)<br />2 x Headphone sponge