A vehicle seat support frame assembly (14) has a seat cushion base member (16) with opposite ends (20) and (22) pivotally connected to first and second legs (28, 40). The first legs (28) are also pivotally connected to the associated vehicle and the second legs (40) have first and second latches (50) and (52). Each first latch (50) provides securement of the associated second leg to the associated vehicle in the seating position, and each second latch (52) prevents pivoting between the second leg and the seat cushion base member end (22) to provide rigidity in the seating position.