Glitter refers to the quality that some materials have to shine with brief sparks or bright flashes of reflected light.
Rhinestones and sequins are examples of shiny, decorative adornments that glitter and are generally used to enhance the appearance of evening footwear or clothing.
About Slides:
A backless, open-toed shoe that is generally a type of sandal. Slides can be high heeled, flat heeled, or somewhere inbetween; may cover nearly the entire foot from ankle to toe; or may have only one or two narrow straps.