K Yairi has vast stocks of tonewood that may be left for decades before use and the regular winds in the region are relied upon to season the wood. This process guarantees the stability of instruments for the long term. Wood that is not properly seasoned will not be stable, resulting in splitting, tops lifting, necks warping, imperfect intonation, and a host of other problems. So by using wood that is naturally seasoned, K Yairi is respecting the proper tradition of building instruments, and ultimately, you, the musician. These guitars are built to last a lifetime.