Yurbuds Inspire Pro with Microphone Sport Earphones - Women's (Bulk Packaging) TwistlockTechnology: Yurbuds TwistLock into place for a secure fit that never falls out, even under the most intense workout conditions. Dry Mic: Water resistant 3 button control & microphone for controlling music and calls on the iPhone, iPod, and iPad. Flexsoft: Ergonomically designed to avoid nerve rich areas of the ear. Made with flexible silicone, Yurbuds are ultra soft and comfortable for hours on end. Ambient Noise Awareness: Designed to allow more ambient noise than most other earphones at the same volume levels. Bulk packaging