ULTNICE Pair of Shoe Stretchers Adjustable Shoe Shapers Width Extenders (Red) Color: Red. Material: ABS and aluminum. Stretcher width: 7-12cm / 2.76-4.7inch. Fully contoured heel to comfortably fill the shoe for a snug fit. Support perfect shoe shape, prevents creases and wrinkles. Can be adjusted for width and absorbs moisture naturally.