Endorsed by the uk college of podiatrists insolia flex makes walking in flats more comfortable by insuring your foot is correctly placed within your shoes improving the natural rotational movement of the ball of the foot mules are the shoe of the moment and this stylish pair are no exception item details heel height for ladies size 4 shoe9mm style product shapemule fitregular fit comes in sizes 3 8 insolia flexreg care and composition composition upper textilenlining and sock