2 folding Auto Grip System yokesComfort Grip Folding Backrests Specially Formulated FoamHeight: 905-1130mm (35.6-44.4") Weight: 2.6kg (5.7 lbs)Base radius: 370mm (14.5")Load capacity: 20kg (44lbs) Folded size: 760x115mm (29.9x4.5 ")