Theory of Underthings Boxer Brief Underwear


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We have a breaking new scientific discovery, it's a cure for the common pair of underwear! Science has come a long way since the plain, white brief, so get ready to clear our your underwear drawer. No need to use a microscope to see why these boxer briefs are revolutionary, they have great chemistry!

  • Contour pouch with no fly for max support
  • Seamless back and sides for smooth fit
  • Crossgrain crotch gusset for extra stretch so legs stay in place
  • Blended with Spandex to be ultra-stretchy

Body: 95% cotton, 5% elastane.
Band: 53% nylon, 32% elastane, 15% polyester.

Collect the whole set by pairing these with matching crew and knee high socks.

Fiber Content

Men's 95% cotton / 5% spandex




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