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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JOR JOR 1827 Garoto Bikini Color Black
$9.95
$9.95
$15.30
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JOR JOR 1840 Nitro Trunks Color Black
$18.04
$18.04
$27.76
Save 35%
JOR JOR 1841 Nitro Bikini Color Black
$18.04
$18.04
$27.76
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JOR JOR 1842 Nitro Jockstrap Color Black
$18.04
$18.04
$27.76
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JOR JOR 1846 Ares Bikini Color Black
$16.75
$16.75
$25.77
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JOR JOR 1847 Ares Jockstrap Color Black
$9.95
$9.95
$15.30
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BiteWear BiteWear BW2023101 Discreet Apricot Jockstrap Color Green
$26.09
$26.09
$30.69
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BiteWear BiteWear BW2023101 Discreet Apricot Jockstrap Color Fuchsia
$26.09
$26.09
$30.69
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BiteWear BiteWear BW2023104 Sassy Peach Jockstrap Color Fuchsia
$14.38
$14.38
$16.92
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Xtremen Xtremen 91151 Destellante Trunks Color Teal
$26.09
$26.09
$30.69
Xtremen Xtremen 91149 Destellante Jockstrap Color Silver
$5.00
$5.00
$0.00
SOLD OUT
Xtremen Xtremen 91151 Destellante Trunks Color Green
$26.09
$26.09
$30.69
SOLD OUT
ErgoWear ErgoWear EW1402 FEEL XX Briefs Color Raspberry
$9.95
$9.95
$15.30
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ErgoWear ErgoWear EW1406 FEEL XX Briefs Color Black
$9.95
$9.95
$15.30
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ErgoWear ErgoWear EW1407 FEEL XX Trunks Color Black
$25.43
$25.43
$39.12
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ErgoWear ErgoWear EW1408 FEEL XX Boxer Briefs Color Black
$9.95
$9.95
$15.30
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ErgoWear ErgoWear EW1412 FEEL XX Boxer Briefs Color Electric Blue
$28.38
$28.38
$43.66
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Clever Clever 1449 Sainted Bikini Color White
$21.92
$21.92
$33.73
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Clever Clever 1471 Heavenly Trunks Color White
$29.83
$29.83
$35.09
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Clever Clever 1457 Grace Briefs Color Gray
$20.63
$20.63
$31.74
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Clever Clever 1451 Purity Trunks Color Dark Blue
$26.09
$26.09
$30.69
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Clever Clever 1452 Purity Bikini Color Dark Blue
$26.09
$26.09
$30.69
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Clever Clever 1458 Figure Trunks Color Blue
$9.95
$9.95
$15.30
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Clever Clever 1459 Figure Bikini Color Blue
$16.75
$16.75
$25.77
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Clever Clever 1469 Audacity Bikini Color Black
$27.96
$27.96
$32.89
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Clever Clever 1470 Audacity Jockstrap Color Black
$9.95
$9.95
$15.30
Save 15%
Clever Clever 1471 Heavenly Trunks Color Black
$29.83
$29.83
$35.09
SOLD OUT
Clever Clever 1472 Heavenly Briefs Color Black
$6.00
$6.00
$0.00
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Xtremen Xtremen 91157 Capriati Trunks Color Silver
$20.48
$20.48
$24.09
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Xtremen Xtremen 91169 Mesh Briefs Color Rosewood
$9.95
$9.95
$15.30