Penny Loafer made of fine black tumbled calfskin with leather and rubber sole. Regular fit. MATERIAL: Like all chrome-tanned leather, calfskin is soft and generally smooth. The natural characteristics of animal skin are partially visible as they are obscured by paints and finishing pigments. TAKE CARE: Calfskin care begins with removing dirt with a soft cloth, followed by applying a wax of the right color to nourish and protect the leather. Then rub vigorously with soft polishing glove to shine it.