1.Frame Solid wood for inside frames,built-in imported spring diameter 3mm,the bottom and inside frame is adopted by high quality wood of against decay and insects.cold-rolled plate, antistatic surface treatment for steel frame. 2.Sponge high density,high elasticity sponge,density 35kg/m2,thickness 5-7 inch 3.Shell fabric italian leather,friction >= 50,000 times. the leather is luster,breathable and soft. 4.wooden handrail Hand wood for inside frames,base material is fibreboard. Made to order! Just tell us what you need, you can get what you want. Pls connect us to get more information. Product nameSofaMaterialGenuine leatherSponge high density/35kg/m2,thickness 5-7 inch Style1seat/2seats/3seats/sectionalSizeCustom-madeColorCustom-made