Do you need extra sleeping space? This metal sofa bed is just what you need. Designed in an industrial style with casters for extra sleeping space, with a tap connection for a more industrial look, it is suitable for living rooms, bedrooms and student dorms. The overall frame of the double sofa bed is made of heavy-duty steel, which is sturdy and durable, with good stability and no noise, which helps to improve the quality of sleep. The caster design is very practical, pull out the casters when you need extra sleeping space, usually a sofa, this sofa bed is your best choice for saving space. Product Information: Product Name: Sofa Bed, Double Metal Sofa Bed with Pop-Up Folding Bed, No Box Spring Required, Silver Style: Modern minimalist industrial style Main Material: Steel Size: 75"* 78.7"* 37.8" Color: Black Bed Weight Capacity: 220 lbs Roller Weight Capacity: 220 lbs Recommended mattress thickness: 6-8'' Recommended Caster Mattress Thickness: 6'' With or without mattress: no With or without bed frame: Yes Assembly Level: Full Assembly Required English manual: yes Spring Box Required: No Estimated assembly time: 30 minutes Recommended quantity: 2