The reed for alto sax strength 2.5 JAVA green has been created by Vandoren in 1983 for the Jazz and the variety. This reed Jazz has a thicker end, a pallet (zone where the waves propagate with the largest amplitude) more flexible than the reed traditional. The effects are therefore more comfortable with a cut the Jazz.
This type of spine ensures thereed JAVA a high degree of flexibility in the play of the musician, since the area of elasticity is very great.