Courtesy of 3M Company

Foam Earplugs

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Anyone sitting near a colicky baby on a flight just had to suck it up until 1972, when the Cabot Corporation’s Ross Gardner introduced this sleep-saving tool, which expands in the ear canal to block out noise. —Aimee Lee Ball

World's Most Important Travel Innovations

Foam Earplugs

Anyone sitting near a colicky baby on a flight just had to suck it up until 1972, when the Cabot Corporation’s Ross Gardner introduced this sleep-saving tool, which expands in the ear canal to block out noise. —Aimee Lee Ball

Courtesy of 3M Company

World's Most Important Travel Innovations

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