About this item Total silicone house super comfortable to fit your ear for running, travel, and sleep. Ultra 5mm dynamic drivers deliver crisp and crystal clear sound with a wide range of music styles. Ergonomic double layer noise isolating earpads block out ambient noise: snores, talks, machine Sleep and Travel Hit: the most comfortable fit for Sleeping, Sports, Air Travel, Meditation, and Relaxation, easy to take with zipper carrying case. Universal built-in microphone, compatible with various audio devices. Dimensions: 3.66 x 2.8 x 1.81 inches.