So, I've had these shoes with the cleats on for about a month now, and ridden with them around 12 times. First, let me start by saying that I always buy SIDI and I know my size in SIDI perfectly-- 41.5. I trust the worksmanship and aside from replacing pads and stuff, I have nothing bad to say about SIDI, at all. However, my 41.5 (summer) shoes that I wear have really sucked in the winter. They are too vented, and the fit is very snug, so if I wear warm thick socks my feet are so crammed into the shoe that in fact I end up colder (no trapped air). Last winter I kept messing around with saran wrap on my insoles, plastic bags, and of course shoe covers. But my feet (and the serious pain of the severe cold where I was living) were my ride limiting factor (45 minutes to 1 hour and I had to stop and massage them and warm them up). So I decided to buy a 42 in the Avast because I wanted room for air and thick socks. However, instead of feeling like a small increase in size, it feels like the different between 41.5 and 43 or something like that. I mean, I am SWIMMING in these shoes (not swimming front to back, the difference there is what I'd expect with .5 increase in size). I have every one of the straps at maximum tightness except the ratcheting one. It's true my feet are normal width and have no extra fat on them, but... this is just weird. Further, as I pedal the extra material of the overly roomy fit of the shoes rubs on the crank arm! It's that roomy that it bulbously sticks out and rubs! Already there is a patch of the leather that looks quite different there. Also, with some zippers on some of my full legged items I get irritation due to the zipper and high top of the shoe meeting as I pedal (*again this is because the shoes are, at the maximum tightness of the straps, loose). The good news is that my feet are much warmer, and I can wiggle my toes, even with heavy socks-- it's not as cold where I am this winter, but i think I should be able to just ride through the winter. I'm thinking of adding extra insoles and other fixes, but overall it feels like the cut, esp. of the upper part of the shoes, is just too roomy to have been planned correctly. I've been out on several wet days with these shoes, but so far, no REAL downpours, so I am not sure how they'll stand up in the rain, with or without shoe covers. My rec would be to consider buying these if you have extra meat on your feet, but not if you have skin covering bone and sinew (like me).