Giro: Impressive fit, performance and valueThe Trans™Boa® combines timeless cycling style with the latest materials to redefine performance at this price. It starts with a perforated, breathable microfibre and mesh upper that conforms to your foot, with a Boa® L6 closure dial for fast, intuitive adjustment. Then we add a robust Easton® EC70 carbon composite outsole with replaceable heel pads to get the most out of your pedal stroke, without sacrificing long-term durability.UPPER:Breathable microfibre and mesh upperBoa® L6 (1mm + with macro release) retention with premium coverOffset low-profile straps and offset D-ringOUTSOLE:Easton® EC70 carbon compositeSteel hardwareReplaceable walking padFOOTBED:Moulded EVA footbed with medium arch supportWEIGHT:265 grams (size 42.5)SIZING:40 - 50, including half-sizes from 40.5 - 46.5