The Kacey Keyboard dust covers are made of a spandex/polyester blend that stretches tightly over multiple models, and have a drawstring cord to ensure a perfect fit. They keep your keyboards free from dust and dirt. Fits most 76 and 88 note Models. 1 year limited . drawstring cord ensures a perfect fit. keep your keyboards free from dust and dirt. Fits 76 and 88 note Models. 1 year limited .