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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ErgoWear ErgoWear EW1160 X4D Boxer Briefs Color Burgundy
$31.04
$31.04
$47.76
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JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Yellow
$19.84
$19.84
$23.34
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JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Wine
$21.25
$21.25
$25.00
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JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Turquoise
$21.25
$21.25
$25.00
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JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Royal Blue
$19.84
$19.84
$23.34
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JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Red
$21.25
$21.25
$25.00
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JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Purple
$21.25
$21.25
$25.00
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JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Pink
$21.25
$21.25
$25.00
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JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Opal Green
$21.25
$21.25
$25.00
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JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Neon Green
$21.25
$21.25
$25.00
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JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Navy
$21.25
$21.25
$25.00
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JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Metal Green
$21.25
$21.25
$25.00
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JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Hot Pink
$19.84
$19.84
$23.34
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JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Gray
$19.84
$19.84
$23.34
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JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Coral
$19.84
$19.84
$23.34
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JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Black
$19.84
$19.84
$23.34
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JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Black
$21.25
$21.25
$25.00
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Clever Clever 0604-1 Explore Trunks Color Green
$21.04
$21.04
$24.75
SOLD OUT
HAWAI HAWAI 42255 Microfiber Trunks Color Sea Green
$8.00
$8.00
$0.00
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HAWAI HAWAI 42255 Microfiber Trunks Color Hazelnut
$15.46
$15.46
$23.78
SOLD OUT
HAWAI HAWAI 42293 Microfiber Trunks Color Gray
$8.00
$8.00
$0.00
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HAWAI HAWAI 42255 Microfiber Trunks Color Fuchsia
$15.46
$15.46
$23.78
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ErgoWear ErgoWear EW1254 FEEL GR8 Bikini Color Silver
$22.16
$22.16
$34.09
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ErgoWear ErgoWear EW1246 FEEL GR8 Bikini Color Black
$22.16
$22.16
$34.09
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ErgoWear ErgoWear EW1247 FEEL GR8 Trunks Color Black
$31.65
$31.65
$37.24
Doreanse Doreanse 1403-PRN Persian Briefs Color Printed
$16.10
$16.10
$0.00
Doreanse Doreanse 1799-PRN Leopard Art Boxer Briefs Color Printed
$8.00
$8.00
$0.00
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Male Power Male Power 143-277 Hocus Pocus Uplift Mini Short Color Purple
$18.62
$18.62
$21.90
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Male Power Male Power 145-278 Galactic Mini Short Color Printed
$9.95
$9.95
$15.30
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Xtremen Xtremen 91140 Ultra-soft Trunks Color White
$11.58
$11.58
$17.81