Etymotic Research ER6I Large Yellow Foam Tips
Perfect for large ear canals.
Note: ER-6 eartips are not interchangeable with ER-4 eartips. Also, Eartips are not interchangeable between the ER-6 and the 6i earphones. The only accessories that can be used with both the ER-6 and 6i earphones are the filter changing tool and the filters, but the technique for changing the filters is different.