Personal and atmospheric pressure optimizing adjusts to your individual listening style and altitude Powerful 40mm driver with Liquid Crystal Polymer (LCP) diaphragm Smart Listening Adaptive Sound Control- Adjusts ambient sound settings to you

✔ LATEST MODEL: The RunPhones newest model is useful for any exercise, from running to cross training to boxing, yoga & much more while keeping your hair, back, & sweat out of your face! RunPhones are also the ideal headphones for traveling and sleeping. You can comfortably lay on your side without ear buds digging into your head. ✔ GENUINE COMFORT: RunPhones are the world's most comfortable headphones for fitness and are guaranteed to stay put! Because nothing goes inside your ears, these high-quality, flat speakers are fully adjustable inside the headband so they're actually comfortable to wear. ✔ NO MORE FALLING EARBUDS: Put an end to the age-old earbud power struggle. RunPhones Classic provide superior sound quality with eco-friendly, lead-free electronics. Simply plug in and rock out to your favorite music.