Material: Aluminum alloy, Oxford cloth Square frame makes this chair more stable; Large detachable anti-sinking feet, wont sink in the sand or soft ground, great to use on the beach; Seat height 13.8 inches, width 20.9 inches; Ergonomic design, enough support for your back, wont get tired while sit a long time Ultralight but heavy duty, made of aerospace-grade aluminum alloy 7075 and 900D ripstop oxford, only 2.2 lbs (without the large detachable feet, four feet 0.2 lbs), supports up to 330 lbs; The webbing on the back makes the chair last many years without sinking; All 4 corners at the back of seat fabric are reinforced to ensure reliability; Corrosion-resistant, easy to clean Breathable and comfortable cooling reinforced ergonomic mesh back makes you feel cool in the sand; Deep seat area will give you more comfort; Cup holder to keep your drink at hand; Side pocket for small stuff; Very easy and quick to set up, all the frames are connected by string with the bracket;