Dr. Michael Torres is a certified podiatrist who's treated workers in Brisbane for 17 years. Construction workers, FIFO miners, warehouse staff, factory employees, healthcare workers. Thousands of them.
And he kept seeing an identical pattern.
Worker comes in with heel pain, arch pain, burning sensations. They've tried multiple boot brands. Premium models. $250-350 per pair.
Every boot followed the same timeline: great for 6-8 weeks, then progressively worse.
"I'd ask: 'When did you buy those boots?'" Dr. Torres said. "And almost every time, they'd say 2-3 months ago. Different brands. Different price points. Identical timeline."
Then one day, a 39-year-old FIFO electrician named Glenn came to Dr. Torres' clinic. Eight months into a new roster. Feet destroying him.
Starting to worry about medical clearance.
Glenn had done everything right. Premium $290 Mongrel boots. $70 orthopedic insoles from the podiatry supply shop. Compression socks. Epsom salt baths every swing off.
Nothing worked past three weeks.
Dr. Torres examined his feet. Structurally sound. The fat pad in Glenn's heel was thinning, yes, but that was the result of something, not the cause.
"Show me your boots," Dr. Torres said.
Glenn handed them over. Eight-month-old boots. Barely worn on the outside.
Dr. Torres removed the insoles. Pressed down on the heel section. It compressed. When he released it, it sprang back.
But did it spring back all the way?
He grabbed a caliper. Measured the heel thickness. Compared it to a brand new insole of the same model.
The eight-month-old insole had lost 47% of its original height.
Permanently compressed. Invisible to the naked eye. But measurable at the cellular level.
"This is what's destroying your feet," Dr. Torres told Glenn. "Not your boots. Not your body. Your insoles collapsed months ago and nobody told you."
That moment haunted Dr. Torres.
Because if one pair of premium boots had insoles that collapsed by 47% in eight months, how many others did too?