When it?s showtime (or class time), don?t risk playing with warped, cracked or moldy reeds. With the D?Addario Woodwinds (formerly Rico) Multi-Instrument Reed Storage Case, you can be confident that your clarinet or saxophone reeds are safely and securely held at an ideal 72% relative humidity. When placed in the storage case, reeds are held snugly to a grooved surface, which prevents warping. The airtight gasket ensures a proper seal, which keeps reeds safe and stable when traveling. The slim and sturdy case holds eight of any size clarinet or saxophone reeds, from E? clarinet to baritone sax. Simply insert the included Reed Revitalizer Pack into the lid and you will have a clean and low maintenance way of keeping your reeds fresh with minimal wetting. The humidification pack helps extend the longevity of a reed and prevent warping and cracking by automatically adding or reducing the level of humidity within the case. Each pack will last approximately 45-60 days and then simply replace with a Reed Revitalizer Pack refill. For nearly a century, the name Rico has been synonymous with quality reeds. Now part of the D?Addario family of musical instruments and accessories, D?Addario Woodwinds has revamped the reed-making process to create the reed of choice among all levels of clarinetists and saxophonists, played in the world's most respected symphonies, conservatories, and jazz clubs.