Long time MTBer here. Never owned Giro MTB shoes before and never ordered bike shoes online without trying on first. Wasn't really expecting a great shoe for this price but I was pleasantly surprised. They are great shoes. I wear a US men's size 10 in all casual and athletic shoes. I ordered a 44 in these and the fit is perfect. They even fit OK with my Woolie Boolie winter socks. The fit is snug but not so much in the toe box which is exactly what I need in an MTB shoe. Do note however that I do not have an exceptionally wide foot. The sole is VERY stiff. Again, exactly what I wanted so no power is lost in the pedal stroke. I use Crank Bros Candy pedals. I used the shims for the cleat installation and the pedal engagement is easy and exact. Even with the shims I can walk in these and the cleats not click the floor or pavement when I walk.These are billed as entry level shoes but from my experience I would have to say they are at least one level above that. Well worth the $52 price tag I paid. Would definitely purchase these again. Actually, I may buy another pair before they are sold out of my size. Will probably never see them again at this low price.