This cover fits my Virus&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Keyboard/dp/B000HKC7CM/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Keyboard</a>&nbsp;and Korg Z1 perfectly. Even with a netbook and a desktop&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Evolver/dp/B0002GLCTU/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Evolver</a>&nbsp;sitting on the Virus, the cover fits comfortably. When your keyboard is in use, the cover easily packs down into a tiny bundle (no stuff-sack included, but a big zip-lock bag would probably do if necessary). I'd like to see a smaller size for use with drum machines and other table-top boxes.