Pete OBrienwrote a review of Lake MXZ303 Winter Boots - Wide - Men's on February 2, 2016
I researched a bunch of different boots before buying these and many of the reviews were saying to size up. I believe they fit true to size after they are broken in. If you do size up you get the added toe room for warmth. However, in time the boots will get pressed out and the boa tightening mech will become ineffective at giving the correct amount of support which will cause your heels to slip. Sizing up will add more material and weight as well. I had to slide my cleats a little towards the inside of my feet because the boots are thicker and I was getting slight crank rub. With winter MTB boots there aren't really that many options out there, these keep my feet warm but I might look into getting gaiters for them.