{"product_id":"specialized-propero-4-helmet","title":"Specialized Propero 4 MIPS Road Bike Helmet","description":"\u003ch2\u003eSpecialized Propero 4 Road Bike Helmet\u003c\/h2\u003e\u003cp\u003eThe Specialized Propero 4 is the ultimate road cycling helmet — engineered to deliver the aerodynamic edge of the S-Works Evade 3 and the ventilation of the S-Works Prevail 3, all wrapped in the all-day comfort Specialized is known for. Rated 5-Stars by Virginia Tech®, it's one of the safest road helmets on the market.\u003c\/p\u003e\u003ch3\u003eAerodynamics\u003c\/h3\u003e\u003cp\u003eDeveloped with extensive CFD analysis and Win Tunnel testing, the Propero 4 borrows the aerodynamic leading edge from the S-Works Evade 3 — making it 4 watts (15 seconds over 40km) faster than the S-Works Prevail 3.\u003c\/p\u003e\u003ch3\u003eVentilation\u003c\/h3\u003e\u003cp\u003eInspired by the S-Works Prevail 3, the Propero 4 features a rear-end design with 2mm offset micro-channels that create turbulence in airflow, delivering a continuous, refreshing flow of air even at race pace.\u003c\/p\u003e\u003ch3\u003ePremium Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMIPS Evolve Solution\u003c\/strong\u003e — low-friction layer allowing 10–15mm of sliding motion in all directions to help reduce rotational forces during angled impacts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-Star Virginia Tech® Helmet Rating\u003c\/strong\u003e — the highest safety rating from Virginia Polytechnic Institute and State University.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFS3 Fit System \u0026amp; Occipital Base Adjustment\u003c\/strong\u003e — personalizes fit to your head shape; adjustable for glasses compatibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Tri-Fix web splitter\u003c\/strong\u003e with thin 10mm webbing for increased comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated sunglass storage\u003c\/strong\u003e — secure fit, out of the way when you need it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicro Channeling \u0026amp; large rear vents\u003c\/strong\u003e for maximum airflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-wrap polycarbonate shell\u003c\/strong\u003e for durability and a premium finish.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eFor helmets sold in the U.S. and Canada: Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older.\u003c\/em\u003e\u003c\/p\u003e","brand":"Specialized","offers":[{"title":"Glacial \/ S","offer_id":43536529817659,"sku":"60125-0712","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Taupe \/ S","offer_id":43536529850427,"sku":"60125-0702","price":230.0,"currency_code":"USD","in_stock":true},{"title":"White \/ S","offer_id":43536529883195,"sku":"60124-0712","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Powder Indigo \/ S","offer_id":43536529915963,"sku":"60124-0742","price":230.0,"currency_code":"USD","in_stock":false},{"title":"Black \/ S","offer_id":43536529948731,"sku":"60124-0702","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Hyper Dove Grey \/ S","offer_id":43536529981499,"sku":"60124-0732","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Deep Marine Metallic \/ S","offer_id":43536530014267,"sku":"60124-0722","price":230.0,"currency_code":"USD","in_stock":false},{"title":"Dove Pink \/ S","offer_id":43536530047035,"sku":"60126-0722","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Sandstone Metallic \/ S","offer_id":43536530079803,"sku":"60126-0702","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Powder Indigo \/ M","offer_id":43536530112571,"sku":"60124-0743","price":230.0,"currency_code":"USD","in_stock":false},{"title":"White \/ M","offer_id":43536530145339,"sku":"60124-0713","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Deep Marine Metallic \/ M","offer_id":43536530178107,"sku":"60124-0723","price":230.0,"currency_code":"USD","in_stock":false},{"title":"Black \/ M","offer_id":43536530210875,"sku":"60124-0703","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Taupe \/ M","offer_id":43536193585211,"sku":"60125-0703","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Hyper Dove Grey \/ M","offer_id":43536530243643,"sku":"60124-0733","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Dove Pink \/ M","offer_id":43536530276411,"sku":"60126-0723","price":230.0,"currency_code":"USD","in_stock":false},{"title":"Sandstone Metallic \/ M","offer_id":43536530309179,"sku":"60126-0703","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Glacial \/ M","offer_id":43536530341947,"sku":"60125-0713","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Deep Marine Metallic \/ L","offer_id":43536530374715,"sku":"60124-0724","price":230.0,"currency_code":"USD","in_stock":false},{"title":"Glacial \/ L","offer_id":43536530407483,"sku":"60125-0714","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Sandstone Metallic \/ L","offer_id":43536530440251,"sku":"60126-0704","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Powder Indigo \/ L","offer_id":43536530473019,"sku":"60124-0744","price":230.0,"currency_code":"USD","in_stock":false},{"title":"Hyper Dove Grey \/ L","offer_id":43536530505787,"sku":"60124-0734","price":230.0,"currency_code":"USD","in_stock":true},{"title":"White \/ L","offer_id":43536530538555,"sku":"60124-0714","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Dove Pink \/ L","offer_id":43536530571323,"sku":"60126-0724","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ L","offer_id":43536530604091,"sku":"60124-0704","price":230.0,"currency_code":"USD","in_stock":true},{"title":"Taupe \/ L","offer_id":43536530636859,"sku":"60125-0704","price":230.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0371\/6120\/5819\/files\/60125-170_HLMT_PROPERO-4-HLMT-CE-TPE_HERO.jpg?v=1779423558","url":"https:\/\/www.mackcycle.com\/products\/specialized-propero-4-helmet","provider":"Mack Cycle \u0026 Fitness","version":"1.0","type":"link"}