I was drawn to the durability of resin reeds and purchased this product to try it out. I am selling it because I felt it didn't suit me after trying it. It has only been test-played, so it is as good as new. Of course, after the test play, I wiped it with alcohol to clean it, dried it, and stored it in the paper case it came with. [Product Description] ALTA AMBIPOLY REED "AMBIPOLYMER," a moisture-absorbing resin, is the result of pursuing reed materials. It absorbs moisture like cane, achieving a rich sound with harmonic overtones. It also excels in uniformity and durability, with a lifespan of approximately 12 months or more. It also comes with the world's first 6-month warranty to guarantee its quality (excluding oboe reeds). Its ideal tone and durability make it a truly new-age reed. ■Pairing This is a unique feature of the AMBIPOLY REED. While it is a synthetic material, the reed changes to fit your embouchure and the shape of your mouthpiece as you play it. It optimizes in 5-15 minutes of playing and maintains that state thereafter. * Re-pairing with a new mouthpiece is also possible with the same reed.