Transition from Fitness to Professional Speed: The Ultimate Edge Have you hit a speed wall with your standard recreational skates? When you’re ready to tackle marathons, fitness distance skating, or track racing, equipment matters. SLJJLHX Carbon Fiber Inline Speed Skates are engineered to answer the ultimate question: How do I skate faster with less effort? The secret lies in the stiffness. Soft boots absorb your energy; our carbon fiber shell transfers of your push directly to the 110mm high-rebound wheels. Combined with the rigid CNC aluminum frame, every stride covers more ground. Don’t let rough asphalt slow you down—our ABEC-11 bearings ensure you sustain maximum momentum. Upgrade your gear, beat your personal records, and experience the thrill of true speed. [Born for Marathon & Speed Racing] The speed skates equipped with 110mm high-rebound PU large wheels and high-precision ABEC-11 bearings, minimizes ground friction and glide per stride, allowing you to conquer long-distance racing and outdoor fitness tracks with less muscle fatigue and extreme speed [Carbon Fiber Shell] The speed skates unlike traditional heavy plastic boots, our ultra-lightweight carbon fiber shell delivers power transfer. It provides professional-grade rigidity and impact resistance, ensuring every ounce of your pushing force translates directly into forward momentum without energy loss [Ankle Lock & Anti-Blister Security] High-speed skating requires ultimate stability. The 45° micro-adjustable buckle, combined with reinforced laces, locks your heel deeply into the boot pocket. This ergonomic fixation prevents foot sliding, eliminates friction blisters, and offers unmatched ankle support during sharp turns [Zero-Wobble Aluminum Frame] Adapt to any track instantly. Our upgraded, aircraft-grade aluminum CNC frame perfectly withstands intense vibration. It features an dual-mode design, allowing you to seamlessly switch between 3-wheel (for max speed) and 4-wheel (for agility) setups based on your training needs [Please Note] : Pro speed skates use stiff shells for precision control, differing from soft recreational skates. They require a break-in period for optimal performance. Please order according to your standard sports shoe size. If you have wide feet, order one size up. ASIN B0DJ35T37D Size US 10 / EU 43 Color RED Brand Name SLJJLHX Wheel Size 110 Millimeters Wheel Type Speed Wheel Item Weight 7 Pounds Closure Type Buckle Manufacturer SLJJLHX Special Size Standard Material Type Carbon Fiber Sole Material carbon fiber Wheel Material Polyurethane Included Components Shoelace, Wrench Warranty Description NO