{"product_id":"castelli-fast-feet-4-fietssok-azzurro-italia","title":"Castelli | Fast Feet 4 Cycling Sock | Azzurro Italia","description":"\u003ch2 data-section-id=\"1qb8hwl\" data-start=\"0\" data-end=\"82\"\u003eCastelli Fast Feet 4 Cycling Sock: Advanced Aerodynamics for Maximum Speed\u003c\/h2\u003e\n\u003cp data-start=\"84\" data-end=\"443\"\u003eIn the world of performance cycling and triathlon, every detail counts. The \u003cstrong data-start=\"162\" data-end=\"191\"\u003eCastelli Fast Feet 4 Sock\u003c\/strong\u003e is designed to give riders an aerodynamic advantage at high speed. Thanks to advanced material selection and optimized shaft construction, this sock helps reduce drag, so you can ride more efficiently and faster.\u003c\/p\u003e\n\u003ch4 data-section-id=\"whnoak\" data-start=\"606\" data-end=\"651\"\u003eEngineered for Aerodynamic Performance\u003c\/h4\u003e\n\u003cp data-start=\"653\" data-end=\"893\"\u003eThe Fast Feet series is known for its aerodynamic benefits. The \u003cstrong data-start=\"722\" data-end=\"742\"\u003eFast Feet 4 Sock\u003c\/strong\u003e builds on this technology with an optimized Lycra® shank specifically designed to improve airflow around the lower leg.\u003c\/p\u003e\n\u003cp data-start=\"895\" data-end=\"1125\"\u003eThe aerodynamic structure helps reduce turbulence, allowing you to move more efficiently through the air at high speeds. This makes the sock ideal for \u003cstrong data-start=\"1052\" data-end=\"1104\"\u003etime trials, triathlons and fast training rides\u003c\/strong\u003e where every watt counts.\u003c\/p\u003e\n\u003ch4 data-section-id=\"oypxq1\" data-start=\"1132\" data-end=\"1176\"\u003eComfort for Long Rides and Races\u003c\/h4\u003e\n\u003cp data-start=\"1178\" data-end=\"1373\"\u003eIn addition to aerodynamics, comfort plays an important role. The foot section is based on the well-known \u003cstrong data-start=\"1277\" data-end=\"1306\"\u003eCastelli Rosso Corsa Sock\u003c\/strong\u003e, known for its excellent fit and breathability.\u003c\/p\u003e\n\u003cp data-start=\"1375\" data-end=\"1510\"\u003eThe soft, breathable footbed ensures a comfortable feel in your cycling shoes, even during long rides or hot conditions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSoft and breathable footbed for optimal comfort\u003c\/li\u003e\n\u003cli\u003eLightweight materials for good ventilation\u003c\/li\u003e\n\u003cli\u003ePerfect fit for a stable fit in the shoe\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-section-id=\"rahs0d\" data-start=\"1688\" data-end=\"1725\"\u003eStable Fit at High Speed\u003c\/h4\u003e\n\u003cp data-start=\"1727\" data-end=\"1952\"\u003eThe elastic \u003cstrong data-start=\"1741\" data-end=\"1767\"\u003epolyurethane grip strip\u003c\/strong\u003e at the top of the sock ensures that the shaft stays perfectly in place. This maintains aerodynamic performance and prevents the sock from sagging while riding.\u003c\/p\u003e\n\u003cp data-start=\"1954\" data-end=\"2071\"\u003eThis creates a \u003cstrong data-start=\"1973\" data-end=\"2004\"\u003etight, efficient fit\u003c\/strong\u003e that is perfect for performance cyclists and triathletes.\u003c\/p\u003e\n\u003ch3 data-section-id=\"k7og2e\" data-start=\"2078\" data-end=\"2130\"\u003eWhy choose the Castelli Fast Feet 4 Sock?\u003c\/h3\u003e\n\u003cp data-start=\"2132\" data-end=\"2412\"\u003eThe \u003cstrong data-start=\"2135\" data-end=\"2164\"\u003eCastelli Fast Feet 4 Sock\u003c\/strong\u003e is designed for riders who want to optimize their gear down to the smallest details. With aerodynamically optimized materials and the comfort of the Rosso Corsa line, this sock offers a perfect balance between speed and wearing comfort.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAerodynamic design for maximum efficiency at high speed\u003c\/li\u003e\n\u003cli\u003eLightweight and breathable materials for warm conditions\u003c\/li\u003e\n\u003cli\u003eStable fit thanks to elastic grip strip\u003c\/li\u003e\n\u003cli\u003eComfortable foot section based on the Rosso Corsa Sock\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castelli Cycling","offers":[{"title":"35–39","offer_id":56803936305529,"sku":"4526030-458-SM","price":39.95,"currency_code":"EUR","in_stock":true},{"title":"40–43","offer_id":56803936338297,"sku":"4526030-458-LXL","price":39.95,"currency_code":"EUR","in_stock":true},{"title":"44–47","offer_id":56803936371065,"sku":"4526030-458-XXL","price":39.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/9891\/3954\/files\/Castelli_FastFeet4AzzurroItalia.jpg?v=1772805018","url":"https:\/\/www.triathlonworld.nl\/en\/products\/castelli-fast-feet-4-fietssok-azzurro-italia","provider":"Triathlonworld","version":"1.0","type":"link"}