Material 1.Made of heavy duty steel, 2.The special design of this metal bed are its simple and classical lines 3.Black metal frame boasts clean lines accented with beautifully finished pine wood 4.Assembly required Steel+Pine Size Twin Color Gray Overall Product Dimension 78.1''L*40.2''W*37.4''H Package Dimension Please refer to the Specification Inner Size 39''x 74.8'' Total height 37.4'' Overall Product Weight 32lb Weight Capability 300lb