Please refer to the size image number of package 1 package dimension please refer to the specification upper bed: 4" trundle bed: 4" specifications: product type daybed size twin color white material plywood + MDF + pinewood box spring required no number of slats upper bed: 19 trundle bed: 8 assemblies required yes country of origin Vietnam product What's Included? Trundle Bed Slats Wheels Mattress Storage Bed Features [Maximized space] The extending daybed with a handy pull-out trundle takes up minimal space for the spontaneous sleepover guest. Such a versatile piece, bringing functionality, versatility, and style to your home, perfect for those who have lots of visitors. [twin to king design] when the trundle is pulled apart, this daybed can be expanded from the twin size to the king size. The twin size is suitable for children or daily use. When the guests arrive, the king size is the best choice. [solid construction] the bed structure is crafted from high-quality solid pine wood, solid pine legs, and a strong, durable frame so that the bed is sturdy and durable. [health and comfort] no box spring required, and without needing a foundation. The simple yet elegant wood frame is sturdy and comes with wood slats for extra support and ensures air moves freely around your mattress to keep it fresh for years to come. Built-in smoothly casters, easy for you to pull out of the trundle bed.