61-, 76-, or 88-key keyboard case with adjustable foam and wheels. 61-key dimensions: Length adjustable from 38" to 44" Depth from 10-1/2" to 16-1/2" Height from 3" to 5-1/2" 76-key dimensions: Length adjustable from 46-1/2" to 51" Depth from 10-1/2" to 16-1/2" Height from 3-1/2" to 6-1/2" 88-key dimensions Length adjustable from 51-1/2" to 58" Depth from 10-1/2" to 21-1/2" Height from 4-1/2" to 6-3/4" All feature a spring-loaded handle, aluminum reinforced edges, steel reinforced corners, and rugged twist latches.