The HELIOS model is one of the latest generations of high quality products developed by Carnac that guarantee comfort and maximum performance at the same time. Expressly designed for competition and performance oriented. The upper is made from an ultra-light weight, breathable microfiber fabric. It has large side aeration and a conforming, carbon-fibre reinforced heel for maximum containment of your foot while pedalling. A double, inextensible-Velcro strap closure plus a moulded P-Bax strap on the instep, equipped with the new SMC3 fastening system, whose adjustment lever has been redesigned to be even lighter and for better ergonomics. The new carbon sole has been completely redesigned and is currently made of different layers that combine the objectives of comfort and performance. Its rigidity and weight are exceptional. This carbon sole also has the I.A.I. aeration system and an interchangeable rubber heel. It weighs so little that you hardly know it’s there.