Orthopaedic insoles made of BASF Elastollan thermoplastic polyurethane (TPU). The sole is produced by 3D printing, using fused deposition modelling (FDM), which makes it possible to produce an ultralight cushioning structure tailored to an individual's needs. A low density area can flow smoothly into firm support, helping to stabilise the foot. The open grid allows for breathability. As a shoe sole material, TPU offers excellent vibration dampening and resilience, even with fluctuating temperatures. Image BASF.