This play tent is made entirely of 100% natural cotton canvas. It features an option of no window, a pane style window or a roll up flap window and coordinating ties. The medium is sized at approximately 43″ x 43″ at the base, and 60″ tall. The large is sized at approximately 50″ x 50″ at the base, and 60″ tall. For more details, visit my SHOP.