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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Xtremen Xtremen 91149 Destellante Jockstrap Color Rosewood
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
Xtremen Xtremen 91149 Destellante Jockstrap Color Rosewood
Regular Price
¥4,700
Sale Price
¥4,700
Regular Price
Unit Price
per 
Xtremen Xtremen 91151 Destellante Trunks Color Purple
Regular Price
¥4,700
Sale Price
¥4,700
Regular Price
¥0
Unit Price
per 
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Xtremen Xtremen 91149 Destellante Jockstrap Color Gold
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
Xtremen Xtremen 91162 Morelo Trunks Color Coral
Regular Price
¥4,100
Sale Price
¥4,100
Regular Price
¥0
Unit Price
per 
Xtremen Xtremen 91162 Morelo Trunks Color Black
Regular Price
¥4,100
Sale Price
¥4,100
Regular Price
¥0
Unit Price
per 
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Clever Clever 1448 Sainted Trunks Color White
Regular Price
¥3,600
Sale Price
¥3,600
Regular Price
¥5,500
Unit Price
per 
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Clever Clever 1449 Sainted Bikini Color White
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥5,200
Unit Price
per 
Clever Clever 1471 Heavenly Trunks Color White
Regular Price
¥5,400
Sale Price
¥5,400
Regular Price
¥0
Unit Price
per 
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Clever Clever 1472 Heavenly Briefs Color White
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
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Clever Clever 1447 Fable Briefs Color Gray
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Clever Clever 1456 Grace Trunks Color Gray
Regular Price
¥5,400
Sale Price
¥5,400
Regular Price
¥0
Unit Price
per 
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Clever Clever 1447 Fable Briefs Color Blue
Regular Price
¥3,000
Sale Price
¥3,000
Regular Price
¥4,600
Unit Price
per 
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Clever Clever 1458 Figure Trunks Color Blue
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Clever Clever 1459 Figure Bikini Color Blue
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
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Clever Clever 1466 Misty Jockstrap Color Black
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥4,900
Unit Price
per 
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Clever Clever 1470 Audacity Jockstrap Color Black
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Xtremen Xtremen 91162 Morelo Trunks Color Turquoise
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Xtremen Xtremen 91169 Mesh Briefs Color Rosewood
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Xtremen Xtremen 91169 Mesh Briefs Color Navy
Regular Price
¥4,100
Sale Price
¥4,100
Regular Price
¥0
Unit Price
per 
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Xtremen Xtremen 91158 Capriati Trunks Color Dark Gray
Regular Price
¥2,200
Sale Price
¥2,200
Regular Price
¥3,400
Unit Price
per 
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Xtremen Xtremen 91158 Capriati Trunks Color Candy
Regular Price
¥2,200
Sale Price
¥2,200
Regular Price
¥3,400
Unit Price
per 
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Xtremen Xtremen 91158 Capriati Trunks Color Black
Regular Price
¥2,200
Sale Price
¥2,200
Regular Price
¥3,400
Unit Price
per 
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Xtremen Xtremen 91169 Mesh Briefs Color Black
Regular Price
¥2,400
Sale Price
¥2,400
Regular Price
¥3,700
Unit Price
per 
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Clever Clever 1508 Tethis Trunks Color Yellow
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
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Clever Clever 1509 Tethis Briefs Color Yellow
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
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Clever Clever 1511 Caspian Trunks Color White
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Clever Clever 1512 Caspian Briefs Color White
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Clever Clever 1513 Caspian Jockstrap Color White
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Clever Clever 1532 Swirl Briefs Color White
Regular Price
¥4,000
Sale Price
¥4,000
Regular Price
¥6,100
Unit Price
per