Our Extra Long Twin Size Santa Cruz Platform Bed with Standard Twin Size Trundle Bed is made in the USA from solid Tulip Poplar hardwood. The Toasted Pecan finish adds warmth and charm while enhancing the beauty of the natural wood grain. The sturdy Twin XL platform bed frame features 12 unfinished horizontal support slats which lock into place, creating a rattle free platform for your mattress. The standard Twin Size trundle bed features large wood wheels which roll easily on any surface. Assembly required. Platform bed (upper bed) fits Extra Long Twin size mattress (39" x 80") Trundle (lower bed) will accommodate a standard Twin size mattress (39" x 75") up to 8" thick. (mattresses not included) Made in the USA. Matching Santa Cruz Nightstand available. Extra Long Twin Bed Dimensions: 40"W x 81.75"L x 15"H. Standard Twin Trundle Dimensions: 37" W x 72" L x 4" H. Distance between trundle bed frame and platform bed frame: 8". Slat Width: 2". Slat Thickness: 1". Distance between slats: 4.5"