This is a privacy pop that goes over a twin mattress and acts as a tent. It zips on both sides to get in and out and has 2 mesh screen windows that zip up and down on the headboard and the footboard sides. My son loved this but has grown so tall that he no longer has a twin bed. It does have a slight rip in one of the mesh screen windows but can be easily fixed with a patch or not dealt with at all being it’s not visible from the outside. I paid over $140 for this but only asking $40. My loss your gain. Comes in a cute carrying case as seen in one of the pictures. Non smoking home.