A chair may include a frame, a seat pan, a backrest, a pair of arm rests, and a plurality of legs wherein at least two legs may each provided with an inner leg and an outer leg and the inner leg is configured to telescope out of the outer leg, wherein the at least two legs may include a leg locking system for locking the outer leg to the inner leg when the chair is in an unfolded position, wherein the leg locking system may include a trigger housing, a trigger, and a latch, and wherein the latch may be configured to engage a bushing on the inner leg.