Size: Small and Large.
Color: Choice of black or white shoe laces.
Dimensions: Large Shu-Aide (Typically for Adults): Up to 5 in. (12.7 centimeters) shoe width, ~9 to 15 inches (22.86 centimeters to 38.1 centimeters) shoe length.
Weight: 58 ounces (1.64 kilogram).
Small Shu-Aide (Typically for children or adults with smaller size shoes.): Up to 5 inches (12.7 centimeters) shoe width, under ~9 inches (22.86 centimeters) shoe length.
Weight: 52 oz. (1.47 kilogram).