{"product_id":"castelli-fast-feet-4-aero-road-race-socks-save-watts-lightweight-performance","title":"CASTELLI FAST FEET 4 SOCKS PINK","description":"\u003cdiv class=\"\"\u003e\n\u003ch2\u003eCASTELLI FAST FEET 4\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe science of speed applied to your feet: Fast Feet 4 socks are the result of rigorous dynamic testing to guarantee real aerodynamic gains where others only promise.\u003c\/strong\u003e \u003cbr\u003eThere are many so-called aerodynamic socks on the market, but Castelli Fast Feet 4 stands out due to its exhaustive development and testing. While most are tested statically, Castelli created a system that replicates leg movement and validated the results with real cyclists. The result is a sock capable of saving 2 watts at 50 km\/h, making it an indispensable accessory for competition or for anyone looking to maximize every pedal stroke.\u003c\/p\u003e\n\u003ch3\u003eRosso Corsa Technology and Lycra® Engineering\u003c\/h3\u003e\n\u003cp\u003eThe lower part of the sock is based on the Rosso Corsa model, ensuring total comfort inside the shoes, even during maximum effort. In the upper part, Lycra® with technical ribbing works to release airflow, reducing drag. To ensure consistent performance, a polyurethane strip at the top prevents the sock from slipping down, maintaining its aerodynamic profile intact from the first to the last kilometer.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul class=\"\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Feet Project:\u003c\/strong\u003e Absolute focus on reducing aerodynamic drag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Savings:\u003c\/strong\u003e Proven gain of 2 watts at 50 km\/h\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLycra® Grooved:\u003c\/strong\u003e Ribbed fabric on the leg for optimized airflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRosso Corsa Base:\u003c\/strong\u003e Elite comfort in the foot area for long distances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePU Grip Strip:\u003c\/strong\u003e Silicone\/polyurethane strip for secure grip on the top.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerodynamic Grip:\u003c\/strong\u003e New design for greater comfort and efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e High performance from 10°C to 38°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatherweight:\u003c\/strong\u003e Just 48g of pure technology\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe professionals' choice when every watt counts towards victory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n  .cc-simple {\n    font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;\n    color: #111;\n    line-height: 1.6;\n  }\n  .cc-simple h2 {\n    font-size: 1.5rem;\n    font-weight: 700;\n    letter-spacing: .5px;\n    margin-bottom: .75rem;\n    text-transform: uppercase;\n  }\n  .cc-simple h3 {\n    font-size: 1.1rem;\n    margin: 1.1rem 0 .5rem;\n    font-weight: 600;\n  }\n  .cc-simple p {\n    margin: .25rem 0 .75rem;\n  }\n  .cc-list {\n    margin: .5rem 0 1rem 1.25rem;\n  }\n  .cc-list li {\n    margin: .25rem 0;\n  }\n\u003c\/style\u003e","brand":"Castelli","offers":[{"title":"S\/M","offer_id":57018659635582,"sku":"4526030025_S\/M","price":59.9,"currency_code":"USD","in_stock":true},{"title":"L\/XL","offer_id":57018659668350,"sku":"4526030025_L\/XL","price":59.9,"currency_code":"USD","in_stock":true},{"title":"2XL","offer_id":57018659701118,"sku":"4526030025_2XL","price":59.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1832\/1278\/files\/168202407732-0.jpg?v=1772644892","url":"https:\/\/www.cyclistcloset.com\/en-us\/products\/castelli-fast-feet-4-aero-road-race-socks-save-watts-lightweight-performance","provider":"Cyclist's Closet","version":"1.0","type":"link"}