These are supposed to be the new version of the 65z3. But they are the sustainable and environmental friendly version. They are quite ugly since they are advertised as a natural color.
I am doubting them though because to make them environmental friendly means they have had to use different materials. So I am guessing these new materials will never match the original true version. Did yonex only release these due to pressure from people to release something sustainable? Or are these actually an upgrade ?