How to get your size.
There are a lot of ways to do this but we find the simplest and most reliable is this.
Convert your normal shoe size to Euro and go up one.
So, I'm size 8, that is a 42...I wear size 43 Euro in Adventure, Terra or Predator.
Remeber just go up one size.
We get the sizing right most of the time but naturally we can't hit 100% as hard as we try. If you need to we provide one free return for exchange. You can swap them as many times as you like from this point but you have to cough up the freight.
To help confuse you more there's this
For off-road boots, in most cases you need to order one size larger than your sneakers or work boots. To be sure, you can measure your total foot length against the boot's internal footbed measurement below, and your feet should be at least 3/4 inch (15-20mm) shorter than the internal footbed. This measurement gives you the correct toe clearance for safety and comfort.
MENS SIZING
Size 38 euro = 4 usa = 10.04 inch (255mm) internal footbed
Size 39 euro = 5 usa = 10.23 inch (260mm) internal footbed
Size 40 euro = 6 usa = 10.43 inch (265mm) internal footbed
Size 41 euro = 7 usa = 10.63 inch (270mm) internal footbed
Size 42 euro = 8 usa = 11.02 inch (280mm) internal footbed
Size 43 euro = 9 usa = 11.22 inch (285mm) internal footbed
Size 44 euro = 10 usa = 11.42 inch (290mm) internal footbed
Size 45 euro = 11 usa = 11.81 inch (300mm) internal footbed
Size 46 euro = 12 usa = 12.00 inch (305mm) internal footbed
Size 47 euro = 13 usa = 12.20 inch (310mm) internal footbed
Size 48 euro = 14 usa = 12.40 inch (315mm) internal footbed
Size 49 euro = 15 usa = 12.60 inch (320mm) internal footbed
Size 50 euro = 16 usa = 12.80 inch (325mm) internal footbed
WOMENS SIZING
Size 35 euro = 3 usa womens = 9.45 inch (240mm) internal footbed
Size 36 euro = 4 usa womens = 9.64 inch (245mm) internal footbed
Size 37 euro = 5 usa womens = 9.84 inch (250mm) internal footbed
Size 38 euro = 6 usa womens = 10.04 inch (255mm) internal footbed
Size 39 euro = 7 usa womens = 10.23 inch (260mm) internal footbed
Size 40 euro = 8 usa womens = 10.43 inch (265mm) internal footbed
Size 41 euro = 9 usa womens = 10.63 inch (270mm) internal footbed
Size 42 euro = 10 usa womens = 11.02 inch (280mm) internal footbed
Try this link for a size converter.