I am surprised at the quality of this case for the price. Very durable material, solid zipper, lots of padding and roller wheels. It has internal padded straps to hold your keyboard securely, although if you have a synth with a lot of knobs on top, you may not be able to use the straps. I use it with my DSI Poly Evolver, and put a large piece of cardboard across the top covering the knobs, then use the padded straps over that.