Inspired by the most prized, vintage mouthpieces of the 1920s, Reserve harnesses modern technology, pioneered by DÕAddario, to recreate the incomparable mouthpiece craftsmanship of yesteryear. MilledÑnot moldedÑfrom hard rubber for a higher level of consistency, every Reserve mouthpiece is machined to the strictest tolerances. Of course, the true beauty of Reserve lies beyond its polished angles, curves, and proprietary material to something far more remarkable: its sound.