Northwave Freedom Snowboard Boots Off White Silver Men Size 4.5 - 5

Size Label says USM
Fits Men 5 (performance fit) or 4.5 (comfort fit) 
 

Mondo point 23.0

Note- if you like more room in your boots (comfort fit) you will like to go 1/2 size larger than your normal size. If you want the best function go your regular size, (Performance fit) or tighter fit is better for you.