HQRP Elastic Keyboard Dust Cover for Yamaha PSR-E333 PSR-E344 PSR-E403 PSR-E413 PSR-E423 PSR-E433 Digital Piano Synthesizer + HQRP Coaster HQRP&reg; Keyboard Dust Cover plus HQRP&reg; Coaster; Dust Free Spandex Material Stretches to fit 61 or 76-key Keyboards; Comes Complete With a built-in bag, Plastic Cord and Locking Clasp; 200 days warranty!