A sexploitation film (or "sex-exploitation film") is a class of independently produced, low-budget feature film that is generally associated with the 1960s, and that serves largely as a vehicle for the exhibition of non-explicit sexual situations and gratuitous nudity. The genre is a subgenre of exploitation films. Sexploitation films were generally exhibited in urban grindhouse theatres, the precursor to the adult movie theaters of the 1970s and 1980s that featured hardcore pornography content. The term soft-core is often used to designate non-explicit sexploitation films after the general legalisation of hardcore content. Nudist films are often considered to be subgenres of the sex-exploitation genre as well. "Nudie" films and "Nudie-cuties" are associated genres.