Concerning this item Breathable Comfort: With the Soundcore C30i open earbuds, which are expertly made for breathability and have a secure clip-on design, you can experience unmatched comfort. Enjoy your favorite music in greater comfort and freedom. Designed for a Secure Fit: Our clip-on headphones are made of a cutting-edge, non-deforming hard-shell material that is carefully crafted to hold their shape for a consistently secure fit regardless of how much you use them. Attach for Increased Stability: Regardless of how hard you work out, our state-of-the-art attachable ear grips will keep your clip-on headphones firmly in place. They will completely change the way you listen. Clear Audio: The soundcore C30i has large racetrack drivers measuring 12 x 17 mm. Even when listening with your ears open, you can enjoy crystal-clear audio thanks to a titanium-coated diaphragm. Water-Resistant: constructed using