Quality Ergonomic Office Mesh Chair M2 Great for bad backs,no pressure points on the mesh as the mesh evenly distributes weight. The mesh is cool to sit against;the fabric seat is a wide weave honecombe fabric which helps breathe. Foam is moulded and shaped to contours of bottom and legs for added comfort. The seat can be adjusted in or out to suit all body hieghts and widths. The arms adjust up and down and in and out,for the wider user.The arm pads also slides back and forth. The seatt tilts forwards,flat and reclines. The back rest also adjusts up and down. Owners comment."This is a heavy - duty all round chair that suits most body shapes,very comfortable and great ergonomic desgn.This model chair is much cooler to sit on,so easy to keep clean.The mesh lasts ands lasts even under rough conditions.If you need uniformity in the office this chair could suit all your staff!!!!"regards Mr Kelly