1. High Quality Material: Carrying Case Cover Compatible with OPPO Enco W51 Headphones, and this case is made of flexible shockproof silicone material2. Easy to carry: The bag is equipped with a metal carabiner, which makes it easy to attach to a backpack, wallet, etc. So this bag is perfect for running, hiking and other outdoor sports, which is anti-lost.3. Durable Protection: The case is made of high quality material, shockproof and impact resistant, protecting your earphones from bumps, scratches, dust and stains. Even if it has been used for a long time, it is still comfortable and not old.4. Please note: earphones and charging case are not included. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!5. Optional colors: There are various colors for you to choose from, including black, white, red, pink, light blue, and midnight blue, free choice.