Westone True-Fit tips are premium foam eartips designed to fit Westone universal in-ear monitors and earphones. Westone"s foam construction tips provide a smooth eartip surface to increase comfort and longevity. A plush medium recovery foam ensures easy insertion and maximum seal. True-Fit earphone tips are color coded based on measurements. Our extended five tip size range was developed by profiling over 15 million ears in our EarVault database which contains anatomical 3D scans of the human ear. True-Fit tips allow an individual fit for excellent retention, comfort and sound isolation.