1) No effect to your Macbook and easy installation.<br>2) Protect your laptop against dust and moisture.<br><br>3) Material: The case is plastic hard case with silk leather<br><br>About Model Number:<br>Please kindly check the model of your Macbook before purchasing!<br><br>Note: If youre not sure the model， please kindly check the back of your macbook， you could see the model (Axxxx) printed there， or contact us by ebay message， we will reply asap.<p><strong><strong><img src="https://contestimg.wish.com/api/webimage/56d4767bc83fa215fd6b8b1f-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/56d4767bc83fa215fd6b8b1f-1-original.jpg" noproxy></strong></strong></p>