This cover is good for normally use, for example schools, hotels, or small touring band. It's not possible to use in heavy duty, because it haven't got sponge lining. Good for prevent the scratches in the box, for professional appearance. It could be thicker. Medium water vapor. The best way to use this version of speaker covers to pick it to the speaker, and bring the speaker and the cover for a rack or flight case ( at least double case), and your speaker is never violated under the transporting. ( This is more expensive, but super safe solution). Your speaker must be grateful after years, if you take care of it. In this profession, the prevention already cheaper than repair, especially with a plastic speaker, because removing the scratches are expensive and problematic. The cover suitable for indicate the band or company's logo, and you finish with your personal advertisment :)