Size Guide - Union - Block

Men Small Medium Large
Mondo 23 - 26 25 - 28 28+
UK 4 - 7 6 - 9 9+
US Womens 6 - 9 8 - 11  
US Unisex 5 - 8 7 - 10 10+
Euro 37 - 41 40 - 43 43+