Bluetooth Headphones for Sports, Mini V4.2 Wireless Headsets with Mic, IPX6 Waterproof Long Lasting Earbuds Specially Designed for Sports: Designed with sporting in mind, we made sure the shape of the earpiece fits nicely into your ear. The added anti-slip also makes it extra resistant to shock and shake. We even went the extra mile to add an extra layer of silica gel for extra comfort! This truly is the one headset that will never fall out!