The product is a sealed box of Kodak Ektachrome Professional 100 Color Reversal Film, which expired in July 1999. The film format is 35mm/135 slide with a film speed of 100 ISO, capable of producing color images. This particular box contains 36 exposures, suitable for use in film photography. Kodak is the brand known for producing this type of film, and it belongs to the Ektachrome series.