Blundstone classifies its Women's Classic 550 Boot as "Rugged-Lux" because of the way its rugged durability and performance mix with its luxurious look, feel, and comfort. Blundstone uses heavy gauge seam stitching and 2.5mm-thick WeatherSealed leather to ensure long-lasting life, and a dual-density TPU midsole for major traction and support. A soft leather lining feels great against your foot, and pull loops make getting into the Blundstone Classic 550 a cinch.