This is color film in the 120 format.

Color film can be color negative (C-41), motion picture film (ECN-2), or slide film (E6). These names and codes are important because film must be developed in chemistry specifically designed for that type of film.

120 film is also known as medium format, and cameras that use it can take a wide variety of photo sizes. The unifying trait is the 6cm height of the film.