Can be combined with Perch twin loft bed (sold separately) to create a bunk bed unit. Eco-friendly: Made of Baltic birch plywood and eco-MDF; Finishes are non toxic, water-based and free of VOC health hazards; Made under European environmental standards; Packaging made of recycled cardboard; Responsible recycling through licensed collecting facilities; Greenguard certified; Other info: Assembly required.; Uses a standard twin mattress 39" x 75" (not included).; Dimensions: 78 L x 42.25 W x 64 H;.