Mavic zxellium maxi shoes wide fitthis is wider volume version of the race winning zxellium that provides optimal energy transfer thanks to the energy full carbon outsole combined with the ergo lite upper for unbeatable comfort and a light weight features energy full carbon outsole developed with top pro energy frame lateral and medial tpu frame for exceptional foothold support and optimal energy transfer energy lock carbon full carbon 3d heel counter provides excellent heel hold ergo fit