The MEElectronics Sport-Fi M6 utilizes memory wire technology to provide a secure, comfortable, noise-isolating fit while delivering clear and dynamic sound. The M6 eliminates the need to adjust your earphones during your routine with a patented ergonomic earpiece design, over-the-ear fit, and flexible memory wire that conforms comfortably to the shape of your ears and never falls out. Combined with the lab-tested sweat-resistant design, this allows you to forget about your earphones and concentrate on your workout.Secure over-the-ear fit with memory wire never falls out