Wonder Sauna Hot Pants' was the most '70s product to hit the market

In a decade of bizarre fads and weird products, this one takes the cake.

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Retro Thing: Wonder Sauna Hot Pants

Retro Thing: Wonder Sauna Hot Pants

Wonder Sauna Hot Pants' was the most '70s product to hit the market

Wonder Sauna Hot Pants' was the most '70s product to hit the market

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Wonder Sauna Hot Pants' was the most '70s product to hit the market