This is a very nice large HEAVY office chair with real leather on contact surfaces. The back of the chair is a manmade material.  This is a full assembly chair. It will help if you have a second person to hold the back when attaching to the base. The chair has some very nice features such as a footrest and headrest. It also has a function to lock the chair in a reclining position which my husband loves. The reason for the 4 stars is that the chair was not in perfect condition upon arrival. The foot cushion is smashed and indented and one of the armrests is smashed and indented because of poor packaging, it has been 2 days and the intentions do not appear to be going away.  Pictures attached.