Specially engineered calf for women. PU-reinforced microfiber upper for flexibility, abrasion resistance, water resistance and weight-saving. Material ensures consistent fit and is easy to maintain and clear. Contoured Shin Plate is injected with high modulus TPU for a high level of impact and abrasion resistance. Medial facing side incorporates TPU panel with specially design sculpturing for maximum grip contact with bike and improved heat and abrasion resistance. One-piece injected dual compound foot shell with co-injected hard toe protector and integrated steel shank. The shell is highly resistant to abrasion and impact, adds to the boot’s streamlining. Excellent flexion provided by low profile medial and lateral pivot system to offer movement and support. Instep and Achilles accordion flex zones constructed for superior control and support. Extended microfiber gaiter helps seal out excessive water and dirt entry. Soft poly-foam surrounds the ankles and collar for long lasting comfort and shock absorption. Internal mesh textile for improved air circulation and comfort. Ergonomic buckle system offers secure and highly personalized closure. All buckles are easily replaceable. Buckle closure system incorporates polymer and fiberglass buckle arms and high-impact aluminum bridge closures for durability and weight-saving. Buckle system features memory and quick release/locking system with self-aligning design for easy, precise closure and improved riding performance and security. All buckles are easily replaceable. Removable anatomic footbed for comfort and support ensures even weight distribution. Compound sole is seamlessly integrated into the base structure for superior durability, high performing rubber grip patterning and feel. The sole is replaceable. Stella Tech 3 boot is CE certified to EN13634:2010.