This versatile perching stool can be used as 4 different types: as 1. seat only, 2. seat and arms, 3. seat and back and 4. seat back and arms. The frame is a powder coated steel and the seat is padded. The product is flat packed and only requires minor assembly. Seat height adjustable 550-700mm (21 -27 ") Footprint (at lowest height) 420 x 530mm (16 x 21") Footprint (at max height) 430 x 600mm (17 x 23 ") Width between arms 508mm (20")