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 1522 Navigate Trunks Color Red
Regular Price
¥5,200
Sale Price
¥5,200
Regular Price
¥6,100
Unit Price
per 
Save 14%
Clever Clever 1525 Continental Briefs Color Petrol Blue
Regular Price
¥4,300
Sale Price
¥4,300
Regular Price
¥5,000
Unit Price
per 
Save 35%
Clever Clever 1508 Tethis Trunks Color Lilac
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
Save 35%
Clever Clever 1509 Tethis Briefs Color Lilac
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
Save 35%
Clever Clever 1527 Strait Briefs Color Green
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
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Clever Clever 1530 Glacier Bikini Color Green
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥5,200
Unit Price
per 
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Clever Clever 1522 Navigate Trunks Color Gray
Regular Price
¥5,200
Sale Price
¥5,200
Regular Price
¥6,100
Unit Price
per 
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Clever Clever 1533 Kraken Trunks Color Gray
Regular Price
¥4,300
Sale Price
¥4,300
Regular Price
¥5,000
Unit Price
per 
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Clever Clever 1534 Kraken Briefs Color Gray
Regular Price
¥4,000
Sale Price
¥4,000
Regular Price
¥4,700
Unit Price
per 
Save 35%
Clever Clever 1530 Glacier Bikini Color Dark Blue
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥5,200
Unit Price
per 
Save 35%
Clever Clever 1509 Tethis Briefs Color Blue
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
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Clever Clever 1520 Baltic Swim Trunks Color Blue
Regular Price
¥7,700
Sale Price
¥7,700
Regular Price
¥9,100
Unit Price
per 
Save 16%
Clever Clever 1528 Arctic Boxer Briefs Color Blue
Regular Price
¥5,400
Sale Price
¥5,400
Regular Price
¥6,400
Unit Price
per 
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Clever Clever 1511 Caspian Trunks Color Black
Regular Price
¥4,600
Sale Price
¥4,600
Regular Price
¥5,400
Unit Price
per 
Save 35%
Clever Clever 1512 Caspian Briefs Color Black
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥4,900
Unit Price
per 
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Clever Clever 1513 Caspian Jockstrap Color Black
Regular Price
¥3,000
Sale Price
¥3,000
Regular Price
¥4,600
Unit Price
per 
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Clever Clever 1528 Arctic Boxer Briefs Color Black
Regular Price
¥5,400
Sale Price
¥5,400
Regular Price
¥6,400
Unit Price
per 
Save 34%
Clever Clever 1532 Swirl Briefs Color Black
Regular Price
¥4,000
Sale Price
¥4,000
Regular Price
¥6,100
Unit Price
per 
Save 14%
Clever Clever 1533 Kraken Trunks Color Black
Regular Price
¥4,300
Sale Price
¥4,300
Regular Price
¥5,000
Unit Price
per 
Save 15%
Clever Clever 1534 Kraken Briefs Color Black
Regular Price
¥4,000
Sale Price
¥4,000
Regular Price
¥4,700
Unit Price
per 
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Pikante Pikante PIK 1387 Sense Briefs Color Black
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥4,000
Unit Price
per 
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Xtremen Xtremen 91179 Microfiber Bikini Color Silver
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥4,000
Unit Price
per 
Save 35%
Xtremen Xtremen 91170 Printed Trunks Color Leaves
Regular Price
¥2,200
Sale Price
¥2,200
Regular Price
¥3,400
Unit Price
per 
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Xtremen Xtremen 91172 Printed Bikini Color Leaves
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥3,700
Unit Price
per 
Save 35%
Xtremen Xtremen 91173 Printed Trunks Color Leaves
Regular Price
¥2,400
Sale Price
¥2,400
Regular Price
¥3,700
Unit Price
per 
Save 14%
Xtremen Xtremen 91175 Microfiber Trunks Color Green
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥3,700
Unit Price
per 
Save 14%
Xtremen Xtremen 91177 Microfiber Bikini Color Green
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥3,700
Unit Price
per 
Save 15%
Xtremen Xtremen 91179 Microfiber Bikini Color Gold
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥4,000
Unit Price
per 
Save 14%
Xtremen Xtremen 91170 Printed Trunks Color Fire
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥3,700
Unit Price
per 
Save 14%
Xtremen Xtremen 91172 Printed Bikini Color Fire
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥3,700
Unit Price
per