Couvre-pieds Pro Amfib
I always struggle with cold feet.
I ride regular shoes out of winter and dedicated protective low-temperature shoes within the coldest season.
In between seasons, the first are too cold and the latter not necessary.
So, I went for those toes. They do an amazing job because I can wear the light shoes+toes combo down to 6C or so.
My only downside is that they are a bit short(for me) and it is tricky to avoid the velcro not covering the end of the cleat, making it difficult to engage. Then, I have to pull well to fit the toe over the shoe.
One more centimeter length would make this all easier.
I ride a regular 44-size shoe, normal width, and Pearl Izumi merino socks.