The Upholstered Campus 4 Chair by Cambridge is made from solid European Beech Hardwood and features an upholstered seat and back made of 8 plys for a finished thickness of 7/16". Custom options are available. The cushion foam on the seat is 1-1/8" thick and 3/4" thick on back for added comfort. This chair is available in Natural and Oak finishes and comes in over 100 different fabrics. Mortise and tenon joints are glued and reinforced with 18-gauge nails, corner blocks and low root woodscrews. This Campus chair also has a seat and back that are removable for easy repair and re-upholstery. The chair ships via UPS.