The material combination of aluminum and stainless steel. Rotation angles are variably adjustable: The height adjustment locks in place, so that the cushion will not slide down, even at higher workloads. The joints are made out of metal and are extremely resilient. The foot rest also comes with a carry bag (W 690 x H 320 x D 240 mm). Maximum weight load 40 kg. Height 520-620 mm.