The BIRKENSTOCK Rio model is the classic kids? shoe. Designed back in the 1970s, it has been a healthy and laid-back summer companion for generations of children ever since. These sandals leave nothing to be desired in terms of style, either ?and are stunningly glamorous in their shimmering metallic look with python print. Note: The pattern can vary as the print is based on a natural snakeskin pattern. For 1/2 sizes, order next size up. N = Narrow Width.