I’ve owned every kind of reed case available, including some custom made for me, and finally have found the ultimate. Holds your reeds at 40% humidity…which enhances their playability if you have not played them for a while, without keeping them so moist that they deteriorate more quickly. In addition, the small air holes allow a little movement of air that inhibits the growth of mold. These are the ONLY reed cases I’ve ever owned in which not a hint of mold shows up on the reeds. Better response, longer life and no mold! Simple high quality construction that comes apart incredibly easily for cleaning…which is very seldom necessary. What more can you ask? Vandoren delivers the goods…as usual!