I put 150 miles on the shoes this week. a long time Sidi owner, I was a little tentative about a brand change. I measured per the Mavic website instructions & bought the Mavic Cosmic Elite SL's. The test ride was the closest steep climb, 850 feet in 1.5 miles. I filled the week in with everything from flat to difficult climbs. The shoes are comfy, snug & have given me no issues. A great value for the price.