Sleeper coaches are specialized train cars designed for overnight travel, providing passengers with a comfortable place to sleep during long journeys. These coaches typically feature private compartments or shared berths, equipped with bedding, curtains, and sometimes even amenities like washbasins. Travelers can enjoy a more restful experience compared to standard seating, as sleeper coaches allow for reclining beds and reduced noise. Many sleeper coaches are part of long-distance trains, such as those operated by Amtrak in the United States or Indian Railways in India, making them a popular choice for overnight trips.