A class-leading, low-cut performance riding boot, the Stella SMX-1 R v2 Riding Shoe incorporates a host of technical innovations for improved levels of comfort, fit and durability. Constructed from a lightweight and abrasion-resistant microfiber upper and is reinforced with strategically positioned TPU protectors the Stella SMX-1 R v2 features a rubber compound sole with superior grip patterning for excellent grip both on and off the bike, while the accordion flex zones give support and control regardless of your riding position. Advanced microfiber main upper construction. Soft TPR heel insert allows freedom of ankle movement. Ergonomic TPU shift pad. Ergonomic boot shaping for forefoot streamlining. Angled closure strap follows natural shape of rider's instep. Front Velcro closure system, with reverse zip. Closure system reinforced with aramidic fiber wires. Compound rubber sole with grip patterning. Instep and Achilles accordion flex zones. Thermo-welded flex grooves control flexion and flexibility. Double-density ankle protector on both sides. Replaceable bi-injected TPU forefoot slider. External, high modulus TPU heel counter. Internal toe box protection. Removable anatomic foot bed. Internal mesh lining provides cooling comfort. CE-certified.