The B-2 features a Lorica outer shell, which is wrapped around Sidi’s proprietary foot mold (last) to construct a top quality sport boot at a value price. The B-2 is fully lined with breathable fabrics that are treated with a Teflon coating for maximum fabric protection, which surrounds each fiber, maintaining the breathability of the fabric. This Sidi exclusive Teflon coating thus acts as an invisible protection barrier that provides stain repellence. Other features include the Vertebra system Achilles and rear calf protection panel, a replaceable Vertigo toe scuff pad, a replaceable outer ankle protective cap, a replaceable thermoplastic resin shin plate styled just like the Vertigo, fully encapsulated heel cup, zipper and Velcro standard closure system, and an added Malleolus external guard to enhance protection of those tender small foot bones. The B-2 also comes equipped with the same sole as it’s big brother the Vertigo boot. Last but not least the B-2 uses a nylon innersole that offers a unique balance of rigidity and flexibility. This insole will never lose its dynamic characteristics, even after months of intense use, and as an added plus, is water/sweat resistant and is capped with a removable arch support. Combined with the new compound sole the B-2 is winner from the inside out.