These shoes fit according to my normal boot size.  They are sized on the small side from my shoe size.  I found a store that carries them and tried them on before ordering them through Amazon.  I do recommend you do this. I found that they dug in a little under the ankle but wearing them for a while they broke in and are much better.  Walking on the ice was fine with these until the ice started to melt and refreeze causing the ice to be very hard and smooth.  The shoes need a bit of help under these conditions.  I put on a pair of XL Stableicers which, in my opinion, are the best.  I haven't found a stretch of ice I feel unsafe on.  Also, the hard plastic area just above the heel on the back is great for using one foot to take off the shoe without damage.  I also recommend a long handle shoehorn to slip these on and off with ease.