Recommended chair Seat Size: Seat cushion length:13.5-18(34-46cm) Seat cushion width:13.5-18(34-46cm) Seat cushion thick:1-2.5(2.5-6cm) Note: Please measure your chair seat size before purchasing to ensure that it can be installed Please allows 0.1-0.2 inches error as manual measurement. Package Included: 46 x Seat cushion cover(Please choose the quantity)