Leather:
1)Top grain leather. high quality. 100% semi-aniline leather or 100% aniline leather
2)Full grain leather
3)Top grain leather/ match PVC
4)Top grain leather/match split
Inside structure:
1)All selected solid dried hardwood, aridity is under 14 degree. wood frame is keeped tightly by screw.
2)using 27 to 43 density high elasticity foam
3)whole set using high density and high elasticity foam