Gator GKC 88 Keyboard Cover BK

I bought this keyboard cover for my Korg D1. By the measurements that were on the product page, it should have been easily big and long enough to cover the Korg, but to my surprise it was too short and had to be stretched so much to fit over the keyboard that more often than not I would accidentally slingshot the cover to the floor. I double checked the package and Thomann had sent me the correct product and the product package also stated that this was indeed the 88-key version. Korg D1 is one of the more narrow 88-key keyboards there is anyways, so I'm just wondering for which keyboard is this actually made for?

Other than that it's a great product. The craftmanship was top notch and the fabric of the keyboard cover is elastic and soft.