Toni Pons MONA-FR. This women's clog-style slipper is made from recycled felt from plastic bottles and is made in solid colours. The sole is flat and has a thickness of 0.5 cm. The entire sole is made of non-slip rubber. It has a removable insole with a 1.5 cm wedge at the heel that fits the outer sole and gives the slipper a total height of 2 cm.