With a twill outershell and aramid lining for comfort and breathability

plus an Enduro-specific high-grip double-density sole

a double closure system and multi-layer reinforcements with accordion and stretch zones

TPU shifter panel

breathable and moisture wicking knit fabric to provide comfort inside Alpinestars boots

bionic flex knee protector black red RGroup_6526021 With a twill outershell andEngineered for off road riders, the Bionic Flex Knee Protectors are Alpinestars MX knee protectors delivering flexible, ventilated impact protection for motocross. Featuring highly perforated Nucleon Flex Technology protectors externally on a breathable stretch mesh sleeve, they are CE certified to EN 1621 1: 2012 Level 1, with an elasticated top strap and silicone hems for secure positioning, improved ventilation, and unrestricted movement, plus an