Men's Underwear
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.

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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
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$0.00 - Unit Price
- per
HAWAI
HAWAI 42050 Animal Print Hip Briefs Color Black
- Regular Price
- $18.99
- Sale Price
- $18.99
- Regular Price
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$0.00 - Unit Price
- per
HAWAI
HAWAI 41946 Solid Athletic Jockstrap Color Green
- Regular Price
- $16.98
- Sale Price
- $16.98
- Regular Price
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$0.00 - Unit Price
- per
HAWAI
HAWAI 41946 Solid Athletic Jockstrap Color Royal Blue
- Regular Price
- $16.98
- Sale Price
- $16.98
- Regular Price
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$0.00 - Unit Price
- per
HAWAI
HAWAI 42050 Colorful Hip Briefs Color Blue
- Regular Price
- $18.99
- Sale Price
- $18.99
- Regular Price
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$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
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$0.00 - Unit Price
- per
HAWAI
HAWAI 42052 Beige Athletic Jockstrap Color Ivory
- Regular Price
- $16.98
- Sale Price
- $16.98
- Regular Price
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$0.00 - Unit Price
- per
HAWAI
HAWAI 42050 Lines Hip Briefs Color White
- Regular Price
- $18.99
- Sale Price
- $18.99
- Regular Price
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$0.00 - Unit Price
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HAWAI
HAWAI 42050 Colorful Hip Briefs Color Magenta
- Regular Price
- $18.99
- Sale Price
- $18.99
- Regular Price
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$0.00 - Unit Price
- per
HAWAI
HAWAI 42050 Spots Hip Briefs Color Red
- Regular Price
- $18.99
- Sale Price
- $18.99
- Regular Price
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$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
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$0.00 - Unit Price
- per
HAWAI
HAWAI 41963 Solid Hip Briefs Color Green
- Regular Price
- $18.99
- Sale Price
- $18.99
- Regular Price
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$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
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$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
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$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
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$0.00 - Unit Price
- per