Twin-sized Sealy box spring which I'll sell separately as I need to get one if not both items moved out of my living space. The second piece is a twin mattress, Sealy Cocoon: 38”x74.5"x10". Used fifteen times at the most. There is nothing wrong with these. I had an old bedstead I could not adjust well and they are so thick that it put the top of the mattress about 4 feet off the floor. Both are essentially new. Reviews online of the Sealy Cocoon mattress if you are not familiar with it.