Vague Impossible Question: In a new 40-something survey, 60% of adults said they owned a pair of THESE when they were younger. What were they?

Each afternoon around 1:38pm, I ask a "Vague/Impossible Question." If you guess today's question correctly you could win tickets to LAdy Antebellum, Kelsi Ballerini, Brett Young and more at Jiffy Lube Live June 24

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Below, you will find a hint that will give you a great chance to win 

HINT: "I prefer the ones you wear with BLADES on them, but I like these as well"