NIL-UM. This men's slipper combines felt and padded fabric in pain colours. The sole is flat and has a 0.5 cm thickness. The entire sole is made of rubber. It has a removable insole with a 2 cm thick wedge in the heel area. This model fits the usual size; choose a larger size if you are between two numbers. It is not advisable to wash the slippers in the washing machine.