The Wonky Cube has a slightly higher back than front, which tilts you slightly forward when sitting to encourage a straighter back.Wonky Cube OttomanStandard FeaturesPlywood base 35/190 foam Glides Structural Warranty: 10 Years Lead Time: 4-6 Weeks Other OptionsCustomisable dimensions Customisable fabric Standard Dimensions450W x 450D x 450/500H