introduction about the structure : 1. advanced genuine cawleather is used as cover 2. modern style and classic sprites, the antique patern is marked 3. 4cmx5cm pinewooden structure is used to build the structure inside 4. 40# high denstiysponge is used as seater 5. metal cotton is fulfilled inside back. 6. the feet is solid wood. 7. three package layers 8. leather can be replace by pu