The product is a set of four expired Barfen CR 100 colour reversal films from October 1982. These films were used in film photography for capturing vibrant and detailed colour images. The Barfen brand is known for producing high-quality film stock that provides excellent results for photography enthusiasts. With these expired films, users can still enjoy the rich colours and sharp images that colour reversal films are famous for, adding a unique and nostalgic touch to their photographs.