dcwrote a review of Giro Factor Techlace Cycling Shoe - Men's on September 10, 2019
Fit: Runs small
If Specialized and Shimano shoes feel too tight in the heel with their hard plastic heel cups then this is the shoe brand for you.
I use Ergon Solestar insoles and the Solestar site states that their 43 insole fits 42 Shimano and 43 Giro. As I’m coming from Shimano S-Phyfe shoes I’ve found this to be correct.