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

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.

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Clever Clever 5317 Sweetness Piping Briefs Color White
Regular Price
$9.95
Sale Price
$9.95
Regular Price
$15.30
Unit Price
per 
Clever Clever 2394 Attractive Boxer Briefs Color Brown
Regular Price
$8.00
Sale Price
$8.00
Regular Price
$0.00
Unit Price
per 
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Clever Clever 5402 Senses Briefs Color White
Regular Price
$9.95
Sale Price
$9.95
Regular Price
$15.30
Unit Price
per 
Doreanse Doreanse 1779-BLK Pouch Mini Trunk Color Black
Regular Price
$21.40
Sale Price
$21.40
Regular Price
$0.00
Unit Price
per 
Doreanse Doreanse 1760-YLW Low-rise Trunk Color Yellow
Regular Price
$21.62
Sale Price
$21.62
Regular Price
$0.00
Unit Price
per 
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Doreanse Doreanse 1215-WHT Naked Bikini Color White
Regular Price
$6.00
Sale Price
$6.00
Regular Price
$0.00
Unit Price
per 
Doreanse Doreanse 1377-BLK Boost Cheeky Brief Color Black
Regular Price
$20.24
Sale Price
$20.24
Regular Price
$0.00
Unit Price
per 
Doreanse Doreanse 1779-YLW Pouch Mini Trunk Color Yellow
Regular Price
$21.40
Sale Price
$21.40
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0623 FEEL XV Boxer Briefs Color Blue
Regular Price
$8.00
Sale Price
$8.00
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0622 FEEL XV Boxer Briefs Color White
Regular Price
$8.00
Sale Price
$8.00
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0632 FEEL XV Briefs Color White
Regular Price
$7.00
Sale Price
$7.00
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 41921 Boxer Briefs Color Green
Regular Price
$8.00
Sale Price
$8.00
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 41948 Boxer Briefs Color Blue Quartz
Regular Price
$8.00
Sale Price
$8.00
Regular Price
$0.00
Unit Price
per 
HAWAI HAWAI 41948 Boxer Briefs Color Military Green
Regular Price
$8.00
Sale Price
$8.00
Regular Price
$0.00
Unit Price
per 
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HAWAI HAWAI 41948 Boxer Briefs Color White
Regular Price
$9.95
Sale Price
$9.95
Regular Price
$15.30
Unit Price
per 
HAWAI HAWAI 41945 Briefs Color White
Regular Price
$6.00
Sale Price
$6.00
Regular Price
$0.00
Unit Price
per 
Joe Snyder Joe Snyder JS07-Pol Polyester Capri Color Black-Poly
Regular Price
$23.80
Sale Price
$23.80
Regular Price
$0.00
Unit Price
per 
Joe Snyder Joe Snyder JS22-Pol Polyester Mini Cheek Color Fuchsia-Poly
Regular Price
$34.00
Sale Price
$34.00
Regular Price
$0.00
Unit Price
per 
Joe Snyder Joe Snyder JS22-Pol Polyester Mini Cheek Color Yellow-Poly
Regular Price
$34.00
Sale Price
$34.00
Regular Price
$0.00
Unit Price
per 
JOR JOR 0713 Cooper Boxer Briefs Color Beige
Regular Price
$8.00
Sale Price
$8.00
Regular Price
$0.00
Unit Price
per 
Male Power Male Power 153070 Heavy Metal Mini Short Boxer Briefs Color Gold
Regular Price
$27.00
Sale Price
$27.00
Regular Price
$0.00
Unit Price
per 
Male Power Male Power 153070 Heavy Metal Mini Short Boxer Briefs Color Red
Regular Price
$27.00
Sale Price
$27.00
Regular Price
$0.00
Unit Price
per 
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Male Power Male Power 153070 Heavy Metal Mini Short Boxer Briefs Color Silver
Regular Price
$9.95
Sale Price
$9.95
Regular Price
$15.30
Unit Price
per 
Male Power Male Power 150-249 Avant-Garde Enhancer Short Color Eggplant
Regular Price
$8.00
Sale Price
$8.00
Regular Price
$0.00
Unit Price
per 
Male Power Male Power 150-249 Avant-Garde Enhancer Short Color Antique Blue
Regular Price
$8.00
Sale Price
$8.00
Regular Price
$0.00
Unit Price
per 
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Papi Papi 980911-001 3PK Cotton Stretch Jockstrap Color Black
Regular Price
$9.95
Sale Price
$9.95
Regular Price
$15.30
Unit Price
per 
SOLD OUT
Papi Papi 980501-950 3PK Cotton Stretch Brazilian Solids Color Red-Gray-Black
Regular Price
$9.95
Sale Price
$9.95
Regular Price
$15.30
Unit Price
per 
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Papi Papi 980911-941 3PK Cotton Stretch Jockstrap Color Black-Cobalt-Blue
Regular Price
$9.95
Sale Price
$9.95
Regular Price
$15.30
Unit Price
per 
Pikante Pikante PIK 8709 Frenzy Briefs Color White
Regular Price
$6.00
Sale Price
$6.00
Regular Price
$0.00
Unit Price
per 
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PPU PPU 0965 Jockstrap Color Blue
Regular Price
$12.60
Sale Price
$12.60
Regular Price
$14.83
Unit Price
per