Material: Made of wood and engineered wood Gray finish Top bunk with guard rails Reversible step storage with 4 drawers Pull-out trundle bed with casters Foundation/box spring not required Recommend to use twin mattress no thicker than 6 inches for bottom trundle unit Maximizing sleep space is achieved with the stylish Orion Collection. This transitional twin over twin reversible storage stairstep bunkbed is featured in a gray finish making it an appropriate choice for a number of youth bedroom settings. It features a top bunk with safety guard rails, a reversible step unit with four built-in storage drawers, and a pull-out trundle bed with casters perfect for maximizing space and accommodating guests. No foundation or box spring is required. The top bunk fits a mattress up to 6 inches thick, while the trundle is recommended for a twin mattress no thicker than 8 inches. Each bed supports up to 300lbs. Assembly required.Features:- Material: Made of wood and engineered wood- Gray finish- Top bunk with guard rails- Reversible step storage with 4 drawers- Pull-out trundle bed with casters- Foundation/box spring not required- Recommend to use twin mattress no thicker than 6 inches for bottom trundle unitSpecifications:- Bed Dimensions: 63.5"H x 97"W x 41.5"D- Headboard Dimensions: 63.25"H x 41.5"W- Footboard Dimensions: 63.25"H x 41.5"W- Product Dimensions: (Rail to floor) 12"- Product Dimensions: (Height of bottom bed - not included mattress height): 12"- Product Dimensions: (Height of top bunk bed - not included mattress height): 48"- Product Weight: 269.5 lbs- Frame Material: Wood, wood veneer, MDF board- Assembly Required: Yes