Twin Over Twin House Bunk Bed with Slide Features Combines two twin size beds into one, saving space to the greatest extentBunk bed with slideThe upper bunk has high rails to ensure secure and worry-free nightsPlayhouse design makes this bunk the perfect centerpiece for your bedroomThe kids bunk bed frame is constructed from selected solid pine wood and MDF and iron alloy bolts Specification Bed Size: Twin over Twin Frame Material:Plywood+MDF+Pinewood Box Spring Required: No Mattress Included: No Assembly Required: Yes Slat Kit Included: Yes Dimension Overall Product Dimension:79.5"L x 90.4"W x93.9"HUpper Bed Slats:14Bottom Bed Slats:7Bottom Bunk Weight Capacity: 300 lb Top Bunk Weight Capacity: 300 lbUpper Bed Recommended Mattress Thickness: 4"-6"Bottom Bed Recommended Mattress Thickness: 8"Recommended age: over 6 Years Old