Every TV Ears 5.0 headset comes equipped with 5.0 slide-on ear tips that comfortably conform to the shape of your ear. These advanced foam ear tips conform to the shape of your ear to provide an acoustically sealed chamber that blocks distracting background noise while enhancing the clarity of the televisions audio. The comfortable 5.0 slide-on ear tips are easily changed by simply sliding them off the headset and sliding new ones on. This package comes with one year supply (eight individual ear tips). for typical use, We recommend that you change the ear tips every 6-8 weeks to maintain optimal hygiene and performance. Wax build up is not uncommon and may cause blockage in the ear tips resulting in diminished sound. Also, the longer the ear tips are worn and used, the dirtier they get. Keep in mind that the foam material itself will last a very long time, but studies have found that under typical use conditions, The best way to maintain best performance and cleanliness is to change out the ear tips every 6-8 weeks.