In order to get the footwear to certify above level 2 the upper material has to go through the following testing; Abrasion Resistance, where the materials must undergo at least 500 cycles; Circular Blade Cut Resistance, the minimum requirement is 2.5 index; Tear Resistance, the material has to score a minimum of 25 N
Puncture Resistance and  the material has to score a minimum of 60 N

The testing is vigorous and the pass in this test is down to the new Kevlar upper. The Kevlar is said to make the upper of the boot up to 3 times stronger than a regular leather upper making Crossfire the perfect boot for carpenters, floor layers or anyone else who uses a knife in the work place.

The boot's upper is also water resistant and features an aluminium toe cap and composite midsole keeping it lightweight.