GreenForest Ergonomic Office Chair High Back Mesh with Adjustable Lumbar Support Headrest and Folded Mesh Back,No Tools Need for Install Ergonomic Large Size Office Desk Chair, a Great Gift for Teens, Adult Or Students. No Tools Required office chair save time and space- theseatbaseandbackisawholedesign. you can have yourself seated on it without extra assemble work .The back could be folded to the seat with the side button put under the desk to save space Ergonomic Design high back chair- This office chair has Headrest, Backrest, Armrest,adjustment lumbar support and Seat Height, also with a 360-degree swivel can offer a versatile range of motion and extraordinary relaxation. It is specially designed for the sedentary people with the enjoyment and comfortable experience at the office Tilt Mechanism office chair- You can alter the lever to control the amount of effort needed to recline, or lock your seat in an upright position. It helps release the pressure, whether at home or during long workdays Comfortable Office Chair- high density foam padding adds more comfort,Heavy duty nylon base and smooth-rolling casters with weight capacity of 300pounds, best for people under the height of 5'7" Quality Guarantee: We offer you a 1-year warranty and 100% satisfaction guarantee,free component-exchange in two years