The inner material of the shoe fabric is cotton canvas. It is not a rigid material so it adapts perfectly to the foot. The sole is semi-rigid and is covered with non-slip points.Each pair individually bagged.Measures:- Measure size M. 27cm long x (10 cm wide toe and 8 cm wide heel)- Measure size L: 29 cm long (10cm wide toe and 8 cm wide heel), sizes 36-40