The Xtreme 5 Octave Keyboard Case is excellent choice of case at an affordable price.
It is made of nylon waterproof yarn with 10mm sponge padding which gives great protection to the instrument.
It comes with a convenient adjustable carry handle so that it does not cut into your hands as well as a shoulder strap which is great when touring.
The case is fitted with an accessory pocket for cables or extra equipment. The dimensions are: 105.5 x 39 x 12cm.