The Bolts/Screws: You will find the hex bolts have been placed in their bolt holes to ensure proper fit. Dimension: – Item Dimension: 53.5H X 22.0D X 27.6W inches – Package Dimensions: 33.1L x 25.2W x 12.6H inches – Backrest Size: 32.7H x 22.5W inches – Seating Size : 22.0D x 22.0W inches – Seat Height:17.8-21.3 i nches – Adjustable Seat Height: 3.5 inches – Armrest Area:10.1L x 3.54W inches – Armrest Height:10.6x 13.8 inches – Max Capacity:330lb – Shipping Weight:50lbs – Net Weight:45lbs Material: – Fabric – Alloy Frame – ABS Plastic – High Density Shaping Foam Components: – Socket Bolts(which are pre-assembled on the chair): 14 pcs – Seat: 1 pc – Backrest: 1 pc – Footrest: 1 pc – Seat & Backrest Connector Shell L&R: 2 pc – Wheel Base: 1 pc – Gas Cylinder with Plastic Guard: 1 pc – Armrest Set: 2 pcs – Lumbar Support : 1 pc – Headrest Pillow: 1 pc – Seat Plate Mechanism: 1 pc – Caster Wheels: 5 pcs – Phillips Screws: 2 pcs – Screwdriver Socket& Phillip: 2 pcs – Rubber Ring: 2 pcs – Instruction Manual: 1 pc