Sidi Wire 2 Air Road Cycling Shoe - Super comfortable while being snug, tight and stiff

Size-wise, my 9.5 US sizing (for pretty much every running show I own), translated to a Sidi size 43.5. Enough room for a sock or barefoot. Basically spot on perfect. Hope this helps (always a pain having to return something just to swap sizes).
As subjective as all reviews are of course, but finally now know what it feels like to have the watts I generate transfer right to creating forward motion on my tri bike! Ventilated upper and sole, you feel the stiffness. But here’s perhaps the most important take-away: A perfectly, super snug fit but without an uncomfortably and overly tight feel. How they found that sweet spot? No idea, but were I to guess, I’d say it’s the handmade quality Italian craftsmanship.

[@Wheels419]

Do you find the sidi brand runs small?

[@multisportflash]

They seem pretty true to size. You know how it is being between Euro sizing though, right? Always tricky. I wear 43s or 44s. I wear a US 9.5 for almost every running shoe and these Sidis are 43.5 and are perfect. Hope this helps!?