Sizes
37/45 Medium M5 womens boots and mens shoes
46 Large M6 larger mens shoes and boots 

Thickness of new sole in mm
1mm new shoes, very thin sole protection
1.8mm new or lightly worn shoe sole protection
3mm ladies shoes
4mm ladies boots, mens dress shoes and boots
5mm mens heavy shoes and boots

Colour of soling
Choosing a colour that is similar to the side works well.
You can choose to leave this to us
Not all colours available in each thickness