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 91148 Printed Microfiber Jockstrap Color Rainbow Fish
Regular Price
¥2,000
Sale Price
¥2,000
Regular Price
¥3,100
Unit Price
per 
Save 15%
Xtremen Xtremen 91147 Printed Microfiber Trunks Color Mandala
Regular Price
¥2,900
Sale Price
¥2,900
Regular Price
¥3,400
Unit Price
per 
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Xtremen Xtremen 91148 Printed Microfiber Jockstrap Color Mandala
Regular Price
¥2,000
Sale Price
¥2,000
Regular Price
¥3,100
Unit Price
per 
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Xtremen Xtremen 91147 Printed Microfiber Trunks Color Disco Zebra
Regular Price
¥2,000
Sale Price
¥2,000
Regular Price
¥3,100
Unit Price
per 
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Xtremen Xtremen 91148 Printed Microfiber Jockstrap Color Disco Zebra
Regular Price
¥2,000
Sale Price
¥2,000
Regular Price
¥3,100
Unit Price
per 
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Unico Unico 23050100117 Bucle Trunks Color 90-Printed
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥4,900
Unit Price
per 
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Unico Unico 23050100101 Efige Trunks Color 63-Turquoise
Regular Price
¥4,200
Sale Price
¥4,200
Regular Price
¥4,900
Unit Price
per 
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Unico Unico 23050100116 Espectaculo Trunks Color 63-Turquoise
Regular Price
¥4,200
Sale Price
¥4,200
Regular Price
¥4,900
Unit Price
per 
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Unico Unico 23050100104 Escaque Trunks Color 63-Green
Regular Price
¥4,200
Sale Price
¥4,200
Regular Price
¥4,900
Unit Price
per 
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Clever Clever 1237 Cult Briefs Color White
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,400
Unit Price
per 
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Clever Clever 1204 Angel Trunks Color Violet
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Clever Clever 1205 Angel Briefs Color Violet
Regular Price
¥4,800
Sale Price
¥4,800
Regular Price
¥0
Unit Price
per 
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Clever Clever 1206 Angel Jockstrap Color Violet
Regular Price
¥3,000
Sale Price
¥3,000
Regular Price
¥4,700
Unit Price
per 
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Clever Clever 1235 Fervor Trunks Color Pink
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Clever Clever 1261 Curse Trunks Color Ochre
Regular Price
¥4,800
Sale Price
¥4,800
Regular Price
¥0
Unit Price
per 
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Clever Clever 1262 Curse Briefs Color Ochre
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Clever Clever 1234 Grace Briefs Color Green
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,400
Unit Price
per 
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Clever Clever 1261 Curse Trunks Color Green
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,400
Unit Price
per 
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Clever Clever 1208 Euphoria Briefs Color Gray
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥5,000
Unit Price
per 
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Clever Clever 1260 Euphoria Boxer Briefs Color Gray
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥5,300
Unit Price
per 
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Clever Clever 1204 Angel Trunks Color Blue
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,400
Unit Price
per 
Clever Clever 1205 Angel Briefs Color Blue
Regular Price
¥4,800
Sale Price
¥4,800
Regular Price
¥0
Unit Price
per 
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Clever Clever 1206 Angel Jockstrap Color Blue
Regular Price
¥3,000
Sale Price
¥3,000
Regular Price
¥4,700
Unit Price
per 
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Clever Clever 1224 Inferno Trunks Color Black
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥5,000
Unit Price
per 
Clever Clever 1226 Demon Trunks Color Black
Regular Price
¥4,800
Sale Price
¥4,800
Regular Price
¥0
Unit Price
per 
Clever Clever 1227 Demon Bikini Color Black
Regular Price
¥4,500
Sale Price
¥4,500
Regular Price
¥0
Unit Price
per 
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Clever Clever 1228 Demon Jockstrap Color Black
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,400
Unit Price
per 
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Clever Clever 1229 Karma Bikini Color Black
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥5,000
Unit Price
per 
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Clever Clever 1237 Cult Briefs Color Black
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,400
Unit Price
per 
Clever Clever 1210 Elysium Trunks Color Beige
Regular Price
¥5,100
Sale Price
¥5,100
Regular Price
¥0
Unit Price
per