This Twin Bunk Bed is made of very thick Solid Pine Wood, and not flimsy, wobbly, or shaky. The outer dimensions are 82"L x 43"W x 70"H. The top bunk has a weight limit of 300LBS and the bottom bunk has a weight limit of 400LBS. A Twin Mattress not exceeding 8.5 inches in thickness is needed for the top bunk and a Twin Mattress not exceeding 10 inches in thickness is recommended for the bottom bunk. 
 
* Storage Drawers and mattresses sold separately. Bedding and any other items are not included.