100% Solid Wood - Made from a mix of eucalyptus hardwood and solid pine wood with eucalyptus veneer that provides a smooth and flawless surface. Designed for use without a box-spring. Back is semi-finished. You can sit against the headboard without concern thanks to the mortise and tenon joints and metal angle that firmly support the hardwood spindles. Crafted from solid eucalyptus hardwood harvested from renewable plantation forests. Finished with a non-toxic low-VOC paint made with solvents from 100% renewable sources. While the design looks lightweight, the Mid Century Spindle Bed is amazingly sturdy thanks to its solid eucalyptus hardwood and solid pine wood construction. Details on the headboard posts are eye-catching without detracting from the organic simplicity and levity of the mid-century modern design. In the rear of the headboard, a metal angle provides a secure anchor for the hardwood spindles.