Please check the measurements carefully before making a purchase. Please allow 2-4cm error due to the manual measurement and different measurement methods. Size: 40cm*40cm (15.7 inches*15.7 inches ); 45cm*45cm (17.7 inches*17.7 inches ); 50cm*50cm (19.7 inches*19.7 inches ) ; Material: polyester Color: as shown in the photos please allow slight color difference due to the monitor resolution and light effect when taking pictures! Package includes: one cushion SKU: 961- A172/LYS