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8 months agohttps://www.helmet.beam.vt.edu/equestrian-helmet-ratings.html
This is a good place to start for helmets. They have the same sort of ratings for different sports so if nothing in the equestrian list looks good, you should check the bicycle list. Note that it’s not necessarily current for everything but it’s a good starting point.
This only works if it’s a strongly worded letter.