Having discovered my specialized defroster boots are now too narrow for my runner toes, I bought 3 pairs to try, Lake mx146 did the correct measuring technique, found they are still ridiculously narrow, I pretty sure i don’t need the wide fit as its only my toes i struggled with, and my feet are low volume. Also ordered Northwave x-magna from merlin but due to royal mail strike is been 2 weeks and they havent arrived yet. Ordered 2 pairs of shimano MW7 boots, and fortunately the 47 fit well with room for toes to wiggle and warm socks, seem close to five ten/new specialized fitment