{"product_id":"just1-j-str-helmet-union-grey-matte-black-6030390201001","title":"Just1 J-STR Helmet Union Grey \/ Matte Black 6030390201001","description":"\u003cp\u003eBuilt on the same safety platform that underpins Just1's track-focused J-STR series, the J-STR Union Grey \/ Matte Black delivers race-bred protection wrapped in a clean, understated matte finish. Whether you are pushing hard on a favourite back road or commuting with the same helmet you would wear at a track day, this lid refuses to compromise between performance and everyday usability.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eECE 22.06 and DOT certified — meeting the most current international safety standards for both road and track use\u003c\/li\u003e\n\u003cli\u003eABS outer shell in two shell sizes, paired with a dual-density EPS liner in two sizes, for optimised impact management across the full size range\u003c\/li\u003e\n\u003cli\u003eJ.I.E.R. Emergency Cheek Pads Removal System allows first responders to remove the helmet safely without risk of further injury\u003c\/li\u003e\n\u003cli\u003eProtx2 antimicrobial interior lining, fully removable and machine washable, keeps the helmet fresh across long riding seasons\u003c\/li\u003e\n\u003cli\u003eWide Vision visor with scratch-resistant coating and Pinlock 70 preparation for genuine anti-fog capability in all conditions\u003c\/li\u003e\n\u003cli\u003eEffective multi-channel ventilation system promotes active airflow to keep the rider cool during spirited or extended riding\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRace-Ready Construction for the Road\u003c\/h2\u003e\u003cp\u003eThe J-STR shell architecture draws directly from Just1's motorsport experience. The two-shell-size ABS construction means every size in the range receives a properly proportioned helmet rather than one bloated shell stretched across every head circumference. The dual-density EPS liner reinforces this approach — energy is managed more precisely, which matters whether you are navigating a chicane at pace or surviving an unexpected low-side on the road.\u003c\/p\u003e\u003cp\u003eThe double-D ring retention system is the gold standard for helmet fastening: no ratchets, no slippage, just a mechanically simple closure that holds its position under impact. Paired with the J.I.E.R. emergency cheek pad extraction system, the J-STR Union meets the expectations of riders who take safety as seriously as they take performance.\u003c\/p\u003e\u003ch2\u003eComfort Engineered for Distance\u003c\/h2\u003e\u003cp\u003eLong days in the saddle demand an interior that works as hard as the shell. The Protx2 antimicrobial lining actively inhibits bacterial growth, so the helmet stays genuinely fresh rather than merely smelling of fabric softener after a wash. The cheek pads provide a stable, snug fit without creating pressure points, and the full interior comes out in minutes for washing — a practical detail that matters when you ride regularly in all weathers.\u003c\/p\u003e\u003cp\u003eThe ventilation system channels air through the helmet efficiently, making the Union Grey a genuinely wearable choice in warm conditions rather than a helmet you tolerate while dreaming of removing it at the next stop.\u003c\/p\u003e\u003ch2\u003eVisor Clarity and All-Weather Readiness\u003c\/h2\u003e\u003cp\u003eThe Wide Vision visor gives a generous field of view that reduces the need for excessive head movement in traffic or on track. The scratch-resistant coating protects optical clarity over time, and the Pinlock 70 preparation means you can add an anti-fog insert (sold separately) for autumn and winter riding without any modification. A nose cover is included to reduce interior buffeting and fogging at speed.\u003c\/p\u003e\u003ch2\u003eFitment and Compatibility\u003c\/h2\u003e\u003cp\u003eThe Just1 J-STR Union Grey \/ Matte Black is a full-face motorcycle helmet designed for adult riders. It is available in six sizes to suit a wide range of head circumferences. Use the size guide below to find your correct fit.\u003c\/p\u003e\u003ch2\u003eSize Guide\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eHead Circumference (cm)\u003c\/th\u003e\n\u003cth\u003eHead Circumference (inches)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXS\u003c\/td\u003e\n\u003ctd\u003e53–54\u003c\/td\u003e\n\u003ctd\u003e20.9 – 21.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\u003c\/td\u003e\n\u003ctd\u003e55–56\u003c\/td\u003e\n\u003ctd\u003e21.7 – 22.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM\u003c\/td\u003e\n\u003ctd\u003e57–58\u003c\/td\u003e\n\u003ctd\u003e22.4 – 22.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eL\u003c\/td\u003e\n\u003ctd\u003e59–60\u003c\/td\u003e\n\u003ctd\u003e23.2 – 23.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXL\u003c\/td\u003e\n\u003ctd\u003e61–62\u003c\/td\u003e\n\u003ctd\u003e24.0 – 24.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXXL\u003c\/td\u003e\n\u003ctd\u003e63\u003c\/td\u003e\n\u003ctd\u003e24.8 – 25.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eHow to Measure Your Head\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePlace a soft tape measure just above your eyebrows and above your ears\u003c\/li\u003e\n\u003cli\u003eMeasure at the widest point of your head\u003c\/li\u003e\n\u003cli\u003eTake two or three measurements and use the largest reading\u003c\/li\u003e\n\u003cli\u003eThe helmet should fit snugly without pressure points — if it moves freely, size down\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: Just1\u003c\/li\u003e\n\u003cli\u003eModel: J-STR Union Grey \/ Matte Black\u003c\/li\u003e\n\u003cli\u003ePart number: 6030390201001\u003c\/li\u003e\n\u003cli\u003eShell material: ABS (2 shell sizes)\u003c\/li\u003e\n\u003cli\u003eLiner: dual-density EPS (2 sizes)\u003c\/li\u003e\n\u003cli\u003eCertifications: ECE 22.06, DOT\u003c\/li\u003e\n\u003cli\u003eRetention system: double-D ring\u003c\/li\u003e\n\u003cli\u003eVisor: Wide Vision, scratch-resistant, Pinlock 70 prepared\u003c\/li\u003e\n\u003cli\u003eInterior: Protx2 antimicrobial, removable and washable\u003c\/li\u003e\n\u003cli\u003eIncluded: nose cover, helmet bag\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Just1","offers":[{"title":"XS \/ Union Grey \/ Matte Black","offer_id":53168523739402,"sku":"SY-603039020100-4E0B53-XS","price":161.1,"currency_code":"EUR","in_stock":true},{"title":"S \/ Union Grey \/ Matte Black","offer_id":53168523772170,"sku":"SY-603039020100-4E0B53-S","price":161.1,"currency_code":"EUR","in_stock":true},{"title":"M \/ Union Grey \/ Matte Black","offer_id":53168523804938,"sku":"SY-603039020100-4E0B53-M","price":161.1,"currency_code":"EUR","in_stock":true},{"title":"L \/ Union Grey \/ Matte Black","offer_id":53168523837706,"sku":"SY-603039020100-4E0B53-L","price":161.1,"currency_code":"EUR","in_stock":true},{"title":"XL \/ Union Grey \/ Matte Black","offer_id":53168523870474,"sku":"SY-603039020100-4E0B53-XL","price":161.1,"currency_code":"EUR","in_stock":true},{"title":"XXL \/ Union Grey \/ Matte Black","offer_id":53168523903242,"sku":"SY-603039020100-4E0B53-XXL","price":161.1,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/50201589285130_tp.png?v=1785155669","url":"https:\/\/inter-pace.com\/products\/just1-j-str-helmet-union-grey-matte-black-6030390201001","provider":"Inter-Pace","version":"1.0","type":"link"}