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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Roger Smuth Roger Smuth RS069 Jockstrap Color Black
Regular Price
¥4,400
Sale Price
¥4,400
Regular Price
¥6,700
Unit Price
per 
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Roger Smuth Roger Smuth RS066 Jockstrap Color Black
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 14%
Roger Smuth Roger Smuth RS068 Thongs Color White
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥3,700
Unit Price
per 
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Unico Unico 22120100206 Profundo M22 Boxer Briefs Color 82-Dark Blue
Regular Price
¥3,100
Sale Price
¥3,100
Regular Price
¥4,800
Unit Price
per 
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Unico Unico 22120100212 Lustre M22 Boxer Briefs Color 00-White
Regular Price
¥4,100
Sale Price
¥4,100
Regular Price
¥4,800
Unit Price
per 
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Unico Unico 22120100210 Cardenal A22 Boxer Briefs Color 82-Dark Blue
Regular Price
¥4,100
Sale Price
¥4,100
Regular Price
¥4,800
Unit Price
per 
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Unico Unico 22120201114 Nebuloso M22 Briefs Color 99-Black
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
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Unico Unico 22120100113 Cardenal M22 Trunks Color 82-Dark Blue
Regular Price
¥2,900
Sale Price
¥2,900
Regular Price
¥4,500
Unit Price
per 
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Unico Unico 22120100205 Cristalino M22 Boxer Briefs Color 00-White
Regular Price
¥4,100
Sale Price
¥4,100
Regular Price
¥4,800
Unit Price
per 
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Unico Unico 22120201101 Cristalino A22 Briefs Color 00-White
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Unico Unico 22120100213 Cardenal M22 Boxer Briefs Color 82-Dark Blue
Regular Price
¥4,100
Sale Price
¥4,100
Regular Price
¥4,800
Unit Price
per 
Save 15%
Unico Unico 22120100211 Nebuloso A22 Boxer Briefs Color 99-Black
Regular Price
¥4,100
Sale Price
¥4,100
Regular Price
¥4,800
Unit Price
per 
Save 15%
Unico Unico 22120100202 Profundo A22 Boxer Briefs Color 82-Dark Blue
Regular Price
¥4,100
Sale Price
¥4,100
Regular Price
¥4,800
Unit Price
per 
Save 15%
Unico Unico 22120100204 Asfalto A22 Boxer Briefs Color 96-Dark Gray
Regular Price
¥4,100
Sale Price
¥4,100
Regular Price
¥4,800
Unit Price
per 
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Clever Clever 0872 Latin Trunks Color Dark Blue
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥4,000
Unit Price
per 
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Clever Clever 0884 Caribbean Briefs Color Black
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥3,700
Unit Price
per 
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Xtremen Xtremen 91111 Super Shine Jockstrap Color Turquoise
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Xtremen Xtremen 91111 Super Shine Jockstrap Color Black
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Clever Clever 0947 Simple Jockstrap Color Gray
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Clever Clever 0947 Simple Jockstrap Color Grape
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
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Clever Clever 0952 Utopia Bikini Color Black
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Clever Clever 0951 Primal Jockstrap Color Black
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
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Clever Clever 0952 Utopia Bikini Color White
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥4,900
Unit Price
per 
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Pikante Pikante PIK 0982 Praia Jockstrap Color Black
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Pikante Pikante PIK 0979 Angola Jockstrap Color Pink
Regular Price
¥2,400
Sale Price
¥2,400
Regular Price
¥3,700
Unit Price
per 
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Pikante Pikante PIK 0987 Abuya Garter Jockstrap Color Black
Regular Price
¥4,400
Sale Price
¥4,400
Regular Price
¥6,700
Unit Price
per 
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Pikante Pikante PIK 0979 Angola Jockstrap Color Green
Regular Price
¥2,400
Sale Price
¥2,400
Regular Price
¥3,700
Unit Price
per 
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Pikante Pikante PIK 0985 Hare Garter Jockstrap Color Blue
Regular Price
¥4,000
Sale Price
¥4,000
Regular Price
¥6,100
Unit Price
per 
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Pikante Pikante PIK 0992 Yuba Jockstrap Color Beige
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Pikante Pikante PIK 0981 Argelia Jockstrap Color White
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per