The Winter 3D Performance insoles have been inspired by developments we’ve come up with for Ski World Cup racers. These insoles transfer your body movement to your skis more effectively, provide more heel stability with their 3D shape and allow you to turn more precisely. The insulating aluminium film and underfoot EVA foam offer the comfort sought by skiers. TPU shell: foot support & pressure distribution. EVA foam: Comfort. Merry mesh overlay: Comfort & grip. Aluminium film: Insulation Reinforced heel: Rearfoot stability EVA foam pad: Shock absorption How To Use Cut out the sole before use Remove the insole and replace it with the new one. Washing with soap and brush only Do not dry on a radiator, for a better drying use our shoe dryers.