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 with a soft TPU for enhanced impact abrasion while also promoting a natural forwards and backwards movement Alpinestars unique ankle brace protection system provides a bio-mechanical support and protection between the lateral top calf and the shin and ankle, for superior ankle articulation while also limiting hyper-torsion, hyper-extension and hyper-flexion, 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 Equipped with a new TPU shifter zone for.
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