Initially I was concerned there might be an issue with not being able to adjust the fit while riding. The result for me was a non-issue, these shoes fit so well, and a snug, not tight, knot is all it takes. Haven't ridden in intense so cal heat yet but they are well ventilated. Overall, highly recommend
It is winter time so I've not used the new shoes yet but I've owned two other pairs of Sidi's and have only worn out and replaced a few heel pads and one set of buckles. I ride 5,000 mile per year and certainly get my moneys worth with Sidi.
These are some of the lightest shoes i have worn for cycling.