There are many fitness enthusiasts who prefer a sport earphone that provides behind the ear support. Yurbuds "Focus 400" (Red/Black) sport earphones feature the patented TwistLock design, plus an extra peace of mind offered by the earloops. Just like the personalized earbuds, the earloops are made from a soft, comfortable silicone, so that they never cause discomfort. They are flexible and securely wrap your ears rather than hang heavily. These earphones feature the 3-button control and dry mic, which allow convenient navigation of music during rigorous activity as well as hands-free calls even during extended use. The Yurbuds "Focus 400" are compatible with all 3.5mm headphone jacks.