[Compatibility]:These earbuds are designed to be compatible with most of earphones available on the market. The connect hole size is 4.9mm wide opening and fit in-ear earphones with diameter of 4.9mm to 6mm. [Noise Isolation]:Memory foam earbuds adapt perfectly to your ear and provides maximum Noise Isolation from environmental distractions. Enjoy music without raising the volume to compensate for external noise. [Comfort]:Memory foam earbuds super soft, memory foam reduces headphones irritation and fatigue. [How to Use]:Squeeze the earbud, insert into ear and hold for a few seconds before it fully rebound. [Safe & Comfortable]:Made from soft and elastic memory foam, slow rebound, fill with your ear perfectly but you won't feel swelling, stay in-ear.
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