The invention relates to an insole (100) for shoes with a base material, which comprises a sole surface (102) facing the shoe and an opposite foot surface facing the foot, wherein a coating (112) is provided on the sole surface (102), which provides the sole surface (102) of the insole (100) with an increased frictional force with respect to the uncoated sole surface (102), characterised in that the coating (112) is formed from a plurality of individual patterns (120) formed from coating lines (114), which are discrete from one another and are arranged in such a way that they cannot be formed by one or more continuous coating lines (114) miming continuously from a first side (122a) of the sole surface (102) to an opposite second side (122b) of the sole surface (102).