Footwear is sold in adjectives. Comfortable, supportive, ergonomic, breathable, lightweight, non-slip, orthotic — every one of them a word rather than a measurement. Sixty-six listings were read for this catalog and between them they produced not one number with a unit attached to it. Not a weight, not a stack height, not a millimeter of platform. Every one of them was a word.
That is not a scandal and it is not incompetence. It is what happens when a category has no obligation to disclose anything and a photograph does most of the persuading. A seller who writes ultra-lightweight has said something a buyer will nod at. A seller who writes two hundred and forty grams has said something a buyer can hold against a rival, and there is no reason on earth for them to do it.
So this site sorts the vocabulary. Eight words carry most of the weight in this catalog, and each one gets a page saying what it says, what nobody promises, and what you can look at instead. Three of the eight have a published test method somewhere in the world. None of the eight is defined by a standard that any seller is obliged to meet.
The rest is checks: five things a person can establish with a ruler, a sheet of paper, a photograph and two hands. They are unglamorous and they are the only part of this transaction where the reader holds the instrument. That is the whole argument, and everything below is the working.