Products Description Tone, shape and make the most of your free time with this airy and light MBT model Nubuck leather is full grain leather with a buffed surface, which gives the leather a particlarly soft and velvety feel 3D mesh is a light-weight, 3D woven fabric and is highly breathable MBT provides seven different rubber outsole profiles, each adapted to the usage of the footwear. The rubber outsoles are made out of 20 different compounds and provide a perfect balance btween grip and durability.