This one is our new products, Structure is more resonable, easy fold and open. Main material: High quality iron, leather style vinyl, 5cm thick high density foam padding with two layers system, quality hardware and cabling. Adjustable height range of 68cm to 79cm ( 27inch to 31inch). The table has adjustable backrest at any angle. Powder coated and electroplated Package: One piece to a carton. Squeak-proof and designed for easy set-up, no tools needed for assembly.