Orthaheel Womens Gemma is a comfortable orthotic mulestyled slipper. The Gemma combines the pronation control technology designed in Orthaheels sandals with a soft terry cloth spa slipper Men go up a sizesize and a half, example if you are a mens 99.5 order a size 11. Also see the Orthaheel Relax Slipper same slipper but opentoed. Note only certain colors are on sale.