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These enhancements elevate the comfort, protection, and performance of these boots to a new class-leading high.\u003c\/p\u003e\u003cbr\u003e\u003ch2\u003eSpecs\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMain upper material constructed using microfiber with a dedicated laser perforation zone for optimum breathability\u003c\/li\u003e\n\u003cli\u003eFront flex area for improved impact abrasion resistance\u003c\/li\u003e\n\u003cli\u003eRedesigned rear bellow in stretch microfiber for improved front and back movement\u003c\/li\u003e\n\u003cli\u003eRedesigned top gaiter in microfiber material with TPU over injection\u003c\/li\u003e\n\u003cli\u003eSynthetic microfiber panel on medial side for enhanced abrasion resistance\u003c\/li\u003e\n\u003cli\u003eTPU shifter for increased protection on lower medial side\u003c\/li\u003e\n\u003cli\u003eRedesigned TPU shin plate for greater impact absorption performance\u003c\/li\u003e\n\u003cli\u003eReplaceable shin slider\u003c\/li\u003e\n\u003cli\u003eTPU stretch panel design with zip for easier entry and exit, along with a more optimized fit\u003c\/li\u003e\n\u003cli\u003eHook and loop closer secures the zipper pull in position\u003c\/li\u003e\n\u003cli\u003eMicro adjustable ratchet closure on boot top\u003c\/li\u003e\n\u003cli\u003eReplaceable co-injected TPU\/aluminum toe slider with simplified screw system\u003c\/li\u003e\n\u003cli\u003eReplaceable heel plate slider design\u003c\/li\u003e\n\u003cli\u003eLightweight rubber compound sole\u003c\/li\u003e\n\u003cli\u003eBio-mechanical inner bootie with TPU-reinforced external toe area\u003c\/li\u003e\n\u003cli\u003eCE EN13634:2017\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003ch2\u003eResources\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/helmethouse.com\/assets\/product_size_charts\/chart\/24-02-02_Alpinestars_SIZE_CHART_footwear1706923183-1827276.png\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSize 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