Trainers + high heels = a winning fashion formula. Every pair is comfortable and irresistible, from those in coloured fabric or leather, lace-up or slip-on styles, or trainers with a chunky platform sole or concealed inner wedge. Whether you want to pull together a casual-chic outfit composed of jeans and a tee, or want to add a fresh twist to a tailored suit or an elegant dress, here are the must-have styles to look out for, picked out for you by YOOX.