Swimming exercises your whole body and is easy on your joints. It is popular but can be painstaking and boring laps after laps. Traditional earphones need to be plugged into ears deeply and ﬁrmly to make sure ear is sealed especially with intensive body movement. The painful experience and proness to ear infection have greatly hampered the popularity of earphones amongst swimmers. Powered by bone conduction technology, Xtrainerz swimming MP3 headphones are ears-free and eliminate these problems. Let’s make swimming fun.