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Pillars of Danner Quality
Waterproof Test
Does this liner pass or fail our waterproofing test?
No, this liner did not pass our test.
Bubbles are an indication of a failed liner and this bootie will not make it into one of our finished boots.
Wet Flex Test
The wet flex test mimics the motion of walking. How many miles do you think this shoe is tested for?
7.5 miles or 15,000 flexes
We also conduct a dry flex test at 50 miles or 100,000 flexes.
Centrifuge Test
What does the centrifuge test gauge?
The centrifuge test helps to determine if a shoe is waterproof.
We fill a shoe with water and spin it in a centrifuge machine. If water escapes, our waterproofing needs work.
Midsole Adherence Test
How much force is required to break the adhesion bond between the midsole and the outsole?
4-10 Newtons per millimeter
The machine pulls at a constant force and calculates the force required to break the bond.
Laces Abrasion Test
How many revolutions do the laces go through in this durability test?
15,000 revolutions
This machine abrades the laces at a rate of 60 cycles/minute.
Martindale Abrasion Test
How many cycles must a footbed or lining withstand with no abrasion or pilling?
153,000 cycles
At 153,000 cycles, a passing test should show minimal to no abrasion or pilling.
