Sales of women’s boots increased by 15 percent to $3 billion in the USA last year, according to NPD. The research group says that dress casual, casual and hiking boots led the growth, while dressier boots dropped by 22 percent year-over-year. Women’s boots made from suede or nubuck has increased sales by 46 percent in U.S. department stores, while sales of boots made from exotic materials like snakeskin, crocodile and ostrich hide rose by 42 percent. Boots made with combined materials have shown double-digit growth over the last three years. The boot trend is expected to continue in the U.S.