Blundstone’s BRAND NEW 550 is rugged on the outside, luxurious on the inside. With a glove-soft lining, this handsome collection features Blundstone's famous kip leather that wears like iron, and a sumptuous LEATHER LINING that caresses the foot. Handsome and refined, Blundstone's style 550 has raised the bar creating a whole new category in the footwear industry: "Rugged - Lux. Thermoplastic Polyurethane (TPU) Technology. Improved Tread Pattern Traction. Antibacterial Premium Leather Liner. Abrasian Resistant Outsole. Removable Contoured Footbed. WeatherSealed™ leather upper. Heavy Guage Seam Stitching. SPS extra Shock Protection System with PORON, reduces skeletal stress adding additional shock absorption in heel strike zone. Chamfered heel for "first impact" grip.