Exclusive material. Ingenious production. Impressive performance: the innovative 3D MTRX Trainers from Porsche Design. The 3D sole developed exclusively for Porsche Design is inspired by the 3D-printed cushioning structure of the Porsche seat casing and offers an increased level of energy return. The embossed upper – based on the seat centre of the 911 Turbo – is particularly breathable and features carbon fibre and leather details that give the shoe an impeccable look.