Griffin Technology 4039-EJAM EarJam Earbud Sound Enhancing Covers (Discontinued by Manufacturer) Pair of snap-on attachments for iPod ear buds; comes with carry case Improves bass performance while increasing volume output Funnel shapes fit comfortably and securely in the ear Includes 3 sizes of ear pads for different ear contours Compatibility: iPod nano (1G and 2G), iPod mini, 3G iPod, 4G iPod with click wheel, iPod Color, iPod Video, iPod shuffle (1G and 2G)