HQRP dust cover has exceptional elasticity and is is suitable for most 76-88 keys keyboard models thanks to the material it s made of - spandex. Adjustable elastic band makes the dust cover fit perfectly. If you want to protect your keyboard from dust dirt and moisture the dust cover would be perfect for this. The dust cover is made of high quality material thay is why there will be no residue after you remove the cover. It is easy to store the dust cover when you use the keyboard as a special bag which has a plastic cord and locking clasp is included. Disclaimer: This is not an Original Equipment Manufacturer (OEM) product HQRP branded product is a replacement. All brand names and logos are registered trademarks of their respective owners. Any use of the brand names or model designations for this product are made solely for purposes of demonstrating compatibility.