My concern is the fabric can be a little floppy and not constructed
Comparing real-world accident rates for helmeted and non-helmeted riders risks conflating all sorts of other factors (a riders skill, for starters), and trying to do a controlled study in which you force some cyclists to not wear a piece of protective equipment raises ethical issues
That combination is exactly when the long-term questions get skipped, like who owwns (and controls) the tooling, who controls the specifications, how the certified product is protected from drifting once production is 9,000 km away, etc
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residents, while some international versions advertise up to $5M in unlimited emergency medical benefits