This folding cushion stool measures 18.5" x 12.5" when opened. The portable folding cushion stool comes in red or black cushion. This stool is easy to fold and unfold and has a safety ring so that the chair can't be folded without pulling it. Great safety benefit if you have children around. The stool also has a 1" thick soft cushion on the seat. The foldable stool is comfy and sturdy with it's metal legs. Both children and adults can sit on this comfy cushion stool.