South Shore Furniture, Logik Collection, Twin Lower Bunk on Casters, Sunny pine Twin-size bed stands alone or pairs with upper bunk pieces (sold separately) This item is made of composite wood panels that carry the Forest Stewardship Council (FSC) certification Smoothly profiled top edges for safety; locking caster wheels Fits standard twin-size mattress; some assembly required Measures 76-1/4 by 40-1/4 by 13-3/4 inches; 5-year warranty