Adidas Calissage Womens Slide Sandals – A slider is a type of footwear distinct from shoes and just like flip-flops. They are backless and open-toed, basically an open-toed mule. Normally, all slides are sandals. Thongs and flip flops are generally classified separately. Slides could be high-heeled, flat-heeled or somewhere between, and could cover nearly the whole foot from ankle to toe, or might have only a few narrow straps. They typically consist of a single strap or possibly a sequence of straps over the toes and the lower half of the foot to carry the shoe within the foot.