-Ultra Durable, "Kid Tough" Solid Pine Construction--Beautiful 3-stage Protected Pine Lacquer Finish--Trundle Bed Fits Twin Mattress on Both Top & Bottom--Bunk Bed Dimensions: 80"L x 42"W x 38"H--Underbed Trundle Unit Has 3 Working Drawers--Variety of Matching Pieces Are Shown Below-The "Constellations" Collection