Upper material technomicro microfibre Lined lined with cambrelle® and air teflon mesh Sole rubber sole Features replaceable shin plate micro adjustable and replaceable buckle system flex system upper exclusive and patented flex system with hyper extension block fully adjustable calf area wider calf upper (+ 3 cm) - adjustable system between the calf, shin and leg upper which allows to widen the circumference of the boot and accommodate even the wider calves. replaceable metatarsus inserts toe area covered with a plastic reinforcement rigid, shock resistant, anatomically shaped heel cup assembled and replaceable boot leg, it is stitch-free nylon inner sole with removable arch support pad This item cannot be shipped to the United States and Canada.