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 invest in these sleek mid calf boots a must have addition to your core wardrobe exclusive to ms our clever new zips stretch to fit a range of calf shapes and sizes item details heel height for ladies size 4 shoe35mm style product shapemid calf boot fitregular fit