Twin Over Twin Staircase Bunk Bed Exceeds Federal Standards for Strength; Lead-Free, Solid Post Construction with Mortise and tenon joinery; Full and 3/4 guard rails on upper bunk Includes two large drawers for ample underbed storage that slides easily on wheels and can be placed on either side of the bed Mattresses supported by 14-piece slat kit; Accepts up to a 9 In. mattress Includes staircase that can be set up at either end of the bunk bed; Includes Charger with 6-foot cord, ETL listed, 18GA wire,2 USB Ports .5V/3.5A Weight Capacity - Bottom Bunk: 600 lbs. Top Bunk: 400 lbs.; Assembled Dimensions: 103"L x 42.5"W x 68.125"H