https://www.cdc.gov/niosh/topics/noise/noise_levels.html check this out quick glance seems like the excel sheet could be handy
Right front for phone/wallet combo, left for keys and headphone case, and side leg pocket for the dreaded work phone
https://www.cdc.gov/niosh/topics/noise/noise_levels.html check this out quick glance seems like the excel sheet could be handy