Superior Quality: This bed is made of sturdy and high-quality pinewood and plywood that can enhance stability and durability as well as ensure a long lifespan. Multiple Functional Bunk Bed: This bunk bed is featured a built-in stair for children to have fun and develop their sense of balance and coordination. Moreover, this bed has a function of storage undernerth the stair, which taking full advantage of space to store toys, books, bedding, and others. Also, the trundle bed underneath can increase extra sleeping areas using interior space effectively. Modern & Elegant Design: The concise design and stylish appearance of the bed add a modern and airy feel that is perfect for various room styles. Besides, this bed is combined with functional and aesthetic that will enhance any bedroom. No Box Spring Needed: This bed includes 14 solid wood slats, which do not require a box spring, and a mattress can be put on the slats directly (Mattress is NOT included). Overall product dimension: 93.50L x 42.67"W x 65.70"H. Mattress not included. Slats are included and do not require a box spring.