{"product_id":"sub7-calf-sleeve","title":"SUB7 Calf Sleeve","description":"\u003ch3\u003e\u003cspan\u003eSUB-7 Calf Sleeves\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eSave up to 15 watts.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe SUB-7 Project was one of the most significant moments in triathlon history, a challenge that pushed athletes, engineers and technologists to rethink what was possible over the full distance. It didn’t just redefine the limits of race-day performance. It changed how we think about speed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eThe new SUB-7 Calf Sleeves are the fastest calf sleeves we have ever developed, taking technology first developed for the SUB7\/SUB8 project and pushing it further.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eDeveloped through extensive aerodynamic analysis, testing and refinement at the Silverstone Sports Engineering Hub and Derby Velodrome, the sleeves are designed to minimise drag and maximise speed. Compared with aero socks, the increased calf coverage creates greater aerodynamic potential, with testing showing savings of up to 15 watts.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eEvery detail has been considered to optimise airflow around the leg. From the selection of aerodynamic materials to the precision fit and construction, nothing is included without purpose. The result is a calf sleeve designed around one uncompromising objective: to make you faster.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eThis is the latest evolution of a technology born from one of the most ambitious performance projects in triathlon, refined for athletes looking to find speed wherever it exists.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eSUB-7 Built for speed.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSave up to 15 watts\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOur fastest calf sleeves to date\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDeveloped from technology first created for the SUB7\/SUB8 challenge\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExtensive aerodynamic development and testing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAerodynamic materials selected to minimise drag\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrecision fit and construction optimised for airflow\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDeveloped and tested at Silverstone Sports Engineering Hub and Derby Velodrome\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eProven through elite time trial and track testing\u003c\/li\u003e\n\u003cli\u003eGreater calf coverage than aero socks\u003c\/li\u003e\n\u003cli\u003eDesigned with one purpose: to make you faster\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"UNISEX","offers":[{"title":"S","offer_id":56368982491520,"sku":"SUB7CS-S","price":99.99,"currency_code":"GBP","in_stock":true},{"title":"M","offer_id":56368982524288,"sku":"SUB7CS-M","price":99.99,"currency_code":"GBP","in_stock":true},{"title":"L","offer_id":56368982557056,"sku":"SUB7CS-L","price":99.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0233\/5881\/files\/Sub7-Calf-Sleeve-2026_Product-Imagery_F_S_4a14d3f7-dcef-499d-9a68-a7d0fb86c777.jpg?v=1770281722","url":"https:\/\/huubdesign.com\/products\/sub7-calf-sleeve","provider":"HUUB Design","version":"1.0","type":"link"}