Bose sport Earbuds has been designed from the ground up in ordee to energize your exercise with acclaimed lifelike sound with comfortable secure fitting . Proprietary technologies can make your music sound clear and make you feel it balanced, no matter how loud you may turn it up. The earbuds’ sleek design can allow them to sit close to your ears. And the eartips don’t hurt your ears no matter how long you are exercising and don’t fall out no matter how much you may move. You can get ready to beat your personal best, again and again. Bose Sport Earbuds allow your music sound like the performer is beside you that pushes you to go one more mile or do one more rep. Their patented acoustic port design and premium, high-efficiency drivers are combined to deliver big sound from a small acoustic package. Their signature Volume-optimized Active EQ automatically is able to boost the lows and highs so that music, videos, and voices always can sound balanced at any listening level. And their new StayHear™ Max tips are able to create a tight seal with your ear canal — critical for hearing the deep low notes that may add impact and emotion to your music and works to block the ambient noise around you so you are able to focus on your music and your workout. Bose Sport Earbuds are designed in three sizes of StayHear™ Max tips, so you are able to find the right fit for you.