In the video, a man is seen sitting in the back seat of a car. He is wearing a blue shirt and black suspenders. The man is demonstrating how to properly fasten a seat belt. He first shows how to insert the latch plate into the buckle and then how to pull the belt across his body and insert the other end into the buckle. He then clicks the buckle shut, ensuring that it is securely fastened. The man repeats this process several times, emphasizing the importance of fastening the seat belt correctly.