They are made of 47% cotton, 47% viscose and 6% spandex.
Pair Of Thieves Men's Super Fit Boxer Briefs 2pk - Black Xl : Target
Men's SuperFit Boxer Brief (2 Pack), Pair of Thieves
Men's Pair of Thieves Underwear, Boxers & Socks
Pair of Thieves Mens Basics in The Basics Shop
Pair of Thieves Hustle Boxer Briefs, 2-Pack, Cords
Thieves SuperFit Boxer Brief Men's 2-Pack, Sizes S-XL
Mission Ops Brief Hi Flyers
Men's SuperFit Boxer Brief (2 Pack), Pair of Thieves
Pair of Thieves Ultra Light Mens Mesh Boxer Brief Regular Leg S SM