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.