The Isolator. A helmet invented in 1925 that encourages focus and concentration. pic.twitter.com/Jl95Zh8G9b — Historical Pics (@HistoricalPics) March 23, 2017
The Isolator. A helmet invented in 1925 that encourages focus and concentration. pic.twitter.com/Jl95Zh8G9b
— Historical Pics (@HistoricalPics) March 23, 2017
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