Titanium is extensively used by Hublot Classic Fusion, specifically for its lightness. It displays the best relationship between resistance and weight of any material, which makes it an extremely popular material, especially in aeronautics. It also stands out with its resistance to corrosion and its inertia in contact with the skin. Hublot only uses high-quality, grade 5 titanium, the strongest there is. Once polished, this material retains a slightly bluish metallic sheen.