Like the others I suggest ordering a size up. I ordered size 41 (US 7.7) and they fit quite tight. I have a pair of Shimanos of the same size and they fit very well and have quite a roomy toe box. I normally wear size 8 shoes and I understand that other companies make shoes differently. My Shimanos feel like size 8s and these Pearl Izumis feel about size 7.5. So yeah, order a size up for a comfortable fit.