Corby A. Height increasing shoes. Corby A is a shoe with elegant and modern lines, perfect to give you a cosmopolitan look, with style and comfort. Its leather welt gives it distinction while the sole made of EVA gives it lightness and comfort. Made of suede with the 3M Scotchgard treatment, so it repels water. Masaltos.com recommends cleaning your footwear with risers with a mixed hair and metallic brush and brushing it over with a suede and nubuck sponge.