Manufactured from solid pine wood and MDF, the strengthened frame is capable of holding up to 175 lbs on the top bunk and 400 lbs on the bottom bunk. Built to last, this bed is firmly secured with heavy duty screws for solid stability you can rely on. Coming with built-in mattress support, the bunk features 10 upper bunk slats and 8 lower bunk slats to help increase the longevity of your mattresses. The low profile lower bunk is perfect for families with younger kids. Full-length guardrails 14.6" on the upper bunk prevent accidental falls. The built-in 3-step ladder tightly attaches to the bed for easy access and wobble-free footing. Featuring a pitched roof, sweetheart designed window and slide, this unique and intricately designed bunk bed creates a fun and adorable space that not only serves as a comfortable sleeping area but also double as a space for your kids to play and have fun.Weight & DimensionsOverall Product Dimension: 79.5"L x 77.4"W x 82.8"HNumber of Package: 3Overall Product Weight: 176.37 LBSWeight CapacityUpper Bed: 175LBSBottom Bed: 400LBSRecommended Mattress ThicknessUpper Bed: 6"Bottom Bed: 8"Product Type: Bunk BedSize: Twin over TwinColor: Antique Gray + Wood/Antique White + WoodProduct material: Plywood+MDF+PinewoodBed slat material: PlywoodLevel of Assembly: Full Assembly NeededStairs be installed on both sides: YesBox Spring Required: NoMattress Included: NoNumber of SlatsUpper Bed: 10Bottom Bed: 8