Common materials are solid wood and engineered wood (pine, plywood, MDF/particleboard). Some models use upholstered textile finishes such as velvet or linen over a wood or engineered frame.
Common mechanisms are a pull-out trundle on casters or wheels for easy rolling, and a pop-up or lift-style trundle that raises to the main bed height when deployed.
Most listings state adult assembly is required. Many include all necessary hardware and clear instructions, and some also include basic tools to simplify setup—check the product details for specifics.
Dimensions vary by design, but common ranges in these listings are overall widths around 77–84 inches, depths around 42–48 inches, and heights around 29.5–36.6 inches. Verify exact measurements on the product listing before purchasing.
These are generally platform-style frames that use reinforced or solid wood slats to support both the main mattress and the trundle. Listings typically note that a box spring is not required.
Listings commonly include the bed frame and the pull-out trundle frame. Mattresses are usually not included; many products also include the necessary hardware and sometimes basic tools.