As your child begins to outgrow the Large MPS, adding the optional Extended Seat Cushion can extend the life of your MPS. The ideal time to purchase the Extended Seat Cushion is when your child's thigh depth and hip width have outgrown the standard seat cushion. You can extend the life of your MPS by 7 years with the addition of the Extended Seat Cushion.
Seat Width = 13 inches
Seat Depth = 15 inches