Men's Underwear

What you wear underneath is a reflection of how you feel on the outside.

What you wear underneath is a reflection of how you feel on the outside.

Of course, your mood changes every day, so that's why DownUnder Apparel makes sure we have a huge variety of styles of Men's underwear and Men's sleepwear to fit any mood you're in! Find men's briefs, boxer briefs, boxers, trunks, thongs, jockstraps, and unique sexy underwear from the top brands.

SALE
ErgoWear ErgoWear EW0913 MAX Modal Midcut Boxer Briefs Color Peacoat Blue
Regular Price
$19.33
Sale Price
$19.33
Regular Price
$29.74
Unit Price
per 
SALE
ErgoWear ErgoWear EW0917 MAX Modal Midcut Boxer Briefs Color Burgundy
Regular Price
$19.33
Sale Price
$19.33
Regular Price
$29.74
Unit Price
per 
HAWAI HAWAI 42052 Spots Athletic Jockstrap Color Red
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42050 Animal Print Hip Briefs Color Black
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 41946 Solid Athletic Jockstrap Color Green
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 41946 Solid Athletic Jockstrap Color Royal Blue
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42050 Colorful Hip Briefs Color Blue
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42052 Animal Print Athletic Jockstrap Color Black
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42050 Illustration Hip Briefs Color Vanilla
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42052 Beige Athletic Jockstrap Color Ivory
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42050 Lines Hip Briefs Color White
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42050 Colorful Hip Briefs Color Magenta
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42050 Spots Hip Briefs Color Red
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 41963 Solid Hip Briefs Color Royal Blue
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42052 Lines Athletic Jockstrap Color White
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42052 Arabesque Athletic Jockstrap Color Purple
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42050 Beige Hip Briefs Color Ivory
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42050 Arabesque Hip Briefs Color Purple
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 41963 Solid Hip Briefs Color Green
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42050 Flowers Hip Briefs Color Turquoise
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42050 Animal Print Hip Briefs Color Fuchsia
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42052 Colorful Athletic Jockstrap Color Blue
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42052 Flowers Athletic Jockstrap Color Pink
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42052 Colorful Athletic Jockstrap Color Magenta
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42052 Flowers Athletic Jockstrap Color Turquoise
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42050 Flowers Hip Briefs Color Pink
Regular Price
$18.99
Sale Price
$18.99
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42052 Illustration Athletic Jockstrap Color Vanilla
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 42052 Animal Print Athletic Jockstrap Color Fuchsia
Regular Price
$16.98
Sale Price
$16.98
Regular Price
$0.00
Unit Price
per 
Xtremen Xtremen 91079 Microfiber Bikini Color Dark Blue
Regular Price
$18.94
Sale Price
$18.94
Regular Price
$0.00
Unit Price
per 
Xtremen Xtremen 91074 Microfiber Briefs Color Black
Regular Price
$18.94
Sale Price
$18.94
Regular Price
$0.00
Unit Price
per