Polo Ralph Lauren - 3-Pack 4D-Flex Cool Microfiber Boxer Briefs. Color 3 Polo Black. On sale for $31.00. MSRP $54.50.. 5.0 out of 5 starsAdd to favorites. 0 people have favorited thisBrand NamePolo Ralph LaurenProduct Name3-Pack 4D-Flex Cool Microfiber Boxer BriefsGenderMen'sColor3 Polo BlackPrice$31.00MSRP: $54.50