{"product_id":"cycling-socks-brand-castelli-fast-feet-3-soudal-qs-2025-comfort-and-aerodymic","title":"CASTELLI FAST FEET 3 SOUDAL QUICK-STEP 2025 SOCKS","description":"\u003cdiv class=\"\"\u003e\n\u003ch2\u003eCASTELLI FAST FEET 3 SOUDAL QUICK-STEP 2025\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCastelli Fast Feet 3 Soudal Quick-Step socks\u003c\/strong\u003e were developed as part of Castelli's \u003cstrong\u003eFast Feet project\u003c\/strong\u003e — An aerodynamic engineering program applied to every detail of professional cycling apparel. Designed for warm conditions, these socks offer \u003cstrong\u003esuperior in-shoe comfort\u003c\/strong\u003e and \u003cstrong\u003eproven reduction of air resistance\u003c\/strong\u003e .\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart of the \u003cstrong\u003eCastelli Fast Feet Project\u003c\/strong\u003e — optimized for performance in hot conditions.\u003c\/li\u003e\n\u003cli\u003eFoot area based on \u003cstrong\u003eRosso Corsa socks\u003c\/strong\u003e for maximum comfort inside the shoe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolyurethane strip\u003c\/strong\u003e at the top to keep the sock firmly in place.\u003c\/li\u003e\n\u003cli\u003eUpper part made of \u003cstrong\u003echanneled Lycra®\u003c\/strong\u003e , designed to improve airflow separation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 52 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFIT:\u003c\/strong\u003e Race\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAerodynamic engineering tested by professionals.\u003c\/h3\u003e\n\u003cp\u003eWhile many socks call themselves \"\"aero,\"\" the \u003cstrong\u003eFast Feet 3\u003c\/strong\u003e has real-world development and testing to prove it. Castelli created a testing system that replicates the \u003cstrong\u003edynamic movement of the leg\u003c\/strong\u003e . and validated the results with professional cyclists in real-world conditions. The result? These socks can \u003cstrong\u003esave up to 2 watts at 50 km\/h\u003c\/strong\u003e . The latest version features a redesigned grip for \u003cstrong\u003egreater comfort\u003c\/strong\u003e and even better aerodynamic gains. The \u003cstrong\u003eSoudal Quick-Step 2025 team\u003c\/strong\u003e 's choice for maximum efficiency — where every detail counts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Castelli","offers":[{"title":"S\/M","offer_id":56456188789118,"sku":"4235150101 SM","price":54.9,"currency_code":"USD","in_stock":false},{"title":"L\/XL","offer_id":56456188821886,"sku":"4235150101 LXL","price":54.9,"currency_code":"USD","in_stock":true},{"title":"2XL","offer_id":56456188854654,"sku":"4235150101 2XL","price":54.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1832\/1278\/files\/167346229792-0.jpg?v=1761317588","url":"https:\/\/www.cyclistcloset.com\/en-us\/products\/cycling-socks-brand-castelli-fast-feet-3-soudal-qs-2025-comfort-and-aerodymic","provider":"Cyclist's Closet","version":"1.0","type":"link"}