A sleeper train is a type of train designed for overnight travel, allowing passengers to sleep comfortably during their journey. These trains typically feature sleeping compartments or cabins, which can range from basic bunks to luxurious suites. They provide amenities such as bedding, pillows, and sometimes even private bathrooms, making long-distance travel more convenient. Sleeper trains are popular in many countries, including India, Russia, and the United States. They offer a unique travel experience, allowing passengers to enjoy scenic views while resting. This mode of transportation is often preferred for its ability to save time and accommodation costs, as travelers can arrive at their destination well-rested.