In the video, a person is seen holding a plastic bag filled with snacks. The person then uses a vacuum sealer to remove the air from the bag, which helps to preserve the freshness of the snacks. The vacuum sealer is a handheld device that is used to remove air from a bag or container, which helps to prevent the growth of bacteria and mold. The person in the video demonstrates how to use the vacuum sealer by placing it over the open end of the bag and pumping the handle to remove the air. The video provides a clear demonstration of how to use a vacuum sealer to preserve food items.