True Sleeper This is the True Sleeper Koshiraku Cushion. Although the package was opened, it was only placed on a chair once for testing and is almost unused. - Brand: True Sleeper - Type: Koshiraku Cushion - Set Contents: 1 cushion, 1 instruction manual - Material: 100% Polyester - Size: Approximately 300mm x 380mm Thank you for looking.