Alpinestars Stella SMX-6 V3 Motorcycle Boots Packed with a host of innovative safety and protective features, the Stella SMX-6 v3 Boots are the ultimate track and street performance riding boots packed with race-derived technology and protective materials designed to give riders a crucial performance edge on the track or street. With its newly designed upper, the Stella SMX-6 v3 has been precision-engineered to closely conform to the anatomical contours of the foot, offering optimal flexibility and improved walking comfort. Every component on the Stella SMX-6 v3 Boots has been carefully designed with rider performance in mind, including the protection innovations, improved ergonomics, and comfort features. Key features : Dedicated female fit for optimal riding comfort. Advanced microfiber upper construction for lightweight, high-performance protection against abrasion and superb levels of flexibility. New front flex and back flexion zones are constructed with textile over-injected on 3D mesh, with a soft TPU for enhanced impact abrasion while also promoting a natural forwards and backwards movement. An evolution of Alpinestars unique ankle brace protection system provides a bio-mechanical support and protection between the lateral top calf, the shin and ankle, for superior ankle articulation, as well as providing Achilles and ankle impact protection. Alpinestars Lace-Lock System is constructed from an advanced polymer resin for a guaranteed quick, precise and secure closure. Construction : Main upper material is constructed from microfiber to provide durability, high levels of abrasion resistance, and flexibility. Ergonomic last for forefoot streamlining to enable greater control and improved precision on the bike’s controls. New ergonomic elastic gaiter in front provides a precise fit in any condition. New front flex and back flex design combines textil