These 3mm aluminium innersoles are designed to reinforce the sole of a shoe so a roller skate plate can be mounted.
These use US men's sizes.
You will either receive a CIB one or an unbranded one, as we have started to cut our own aluminium plates.
Aluminium Insole
CIB Crew Aluminium strengthening innersoles have been cut according to US men's Vans sizes.
Here is the corresponding cm measurement as accurate as possible.
Innersole size cm measurement 4 5 22.5 6 22.8 7 23.3 8 24.3 9 25.0 10 25.7 11 26.5 12 28.2 13 29.2