Road Runner Small Keyboard Cover 25 and 37-key Spandex/poly material and drawstring cord for flexible fit of mini (25-, 37-key) keyboards. Road Runner's stretch-to-fit spandex/poly material and drawstring cord make it easy to fit this keyboard cover on 25-note and 37-note models Road Runner's stretch-to-fit spandex/poly material and drawstring cord make it easy to fit this keyboard cover on 25-note and 37-note models