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 1933 Garoto Bikini Color Blue
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 35%
JOR JOR 1940 Athletic Trunks Color Blue
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
Save 16%
JOR JOR 1941 Athletic Briefs Color Blue
Regular Price
¥3,700
Sale Price
¥3,700
Regular Price
¥4,400
Unit Price
per 
Save 35%
JOR JOR 1951 Element Boxer Briefs Color Blue
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
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JOR JOR 1952 Element Briefs Color Blue
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
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JOR JOR 1953 Element Bikini Color Blue
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
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JOR JOR 1934 Dante Bikini Color Black
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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JOR JOR 1966 Dakar Bikini Color Black
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
Save 35%
JOR JOR 1969 Oporto Bikini Color Black
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
Save 16%
ErgoWear ErgoWear EW1655 SLK Boxer Briefs Color Navy Blue
Regular Price
¥5,200
Sale Price
¥5,200
Regular Price
¥6,200
Unit Price
per 
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ErgoWear ErgoWear EW1659 SLK Boxer Briefs Color Burgundy
Regular Price
¥5,200
Sale Price
¥5,200
Regular Price
¥6,200
Unit Price
per 
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ErgoWear ErgoWear EW1663 SLK Boxer Briefs Color Black
Regular Price
¥5,200
Sale Price
¥5,200
Regular Price
¥6,200
Unit Price
per 
Save 15%
Pikante Pikante PIK 0834 Dirty Athletic Pants Color Black
Regular Price
¥6,900
Sale Price
¥6,900
Regular Price
¥8,100
Unit Price
per 
Save 34%
ErgoWear ErgoWear EW1696 FEEL SW Swim Trunks Color Pink Leaves
Regular Price
¥6,100
Sale Price
¥6,100
Regular Price
¥9,300
Unit Price
per 
Save 15%
ErgoWear ErgoWear EW1698 FEEL SW Swim Trunks Color Abstract Blue
Regular Price
¥8,000
Sale Price
¥8,000
Regular Price
¥9,400
Unit Price
per 
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Clever Clever 1579 Coque Briefs Color Orange
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥5,200
Unit Price
per 
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Clever Clever 1560 Malba Boxer Briefs Color Green
Regular Price
¥3,800
Sale Price
¥3,800
Regular Price
¥5,800
Unit Price
per 
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Clever Clever 1561 Malba Briefs Color Green
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Clever Clever 1580 Emotion Trunks Color Gray
Regular Price
¥3,600
Sale Price
¥3,600
Regular Price
¥5,500
Unit Price
per 
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Clever Clever 1561 Malba Briefs Color Grape
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
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Clever Clever 1572 Brilliant Trunks Color Black
Regular Price
¥4,900
Sale Price
¥4,900
Regular Price
¥5,700
Unit Price
per 
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ErgoWear ErgoWear EW1676 MAX FLOW Jockstrap Color Smoke Green
Regular Price
¥3,500
Sale Price
¥3,500
Regular Price
¥5,300
Unit Price
per 
Save 15%
ErgoWear ErgoWear EW1680 MAX FLOW Boxer Briefs Color Smoke Green
Regular Price
¥5,300
Sale Price
¥5,300
Regular Price
¥6,200
Unit Price
per 
Save 34%
ErgoWear ErgoWear EW1681 MAX FLOW Jockstrap Color Gray
Regular Price
¥3,500
Sale Price
¥3,500
Regular Price
¥5,300
Unit Price
per 
Save 15%
ErgoWear ErgoWear EW1690 MAX FLOW Boxer Briefs Color Black
Regular Price
¥5,300
Sale Price
¥5,300
Regular Price
¥6,200
Unit Price
per 
Save 35%
JOR JOR 2077 Army Briefs Color Wine
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
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JOR JOR 2078 Winter Long Johns Color Red
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥5,200
Unit Price
per 
Save 15%
JOR JOR 2081 Dublin Briefs Color Printed
Regular Price
¥4,600
Sale Price
¥4,600
Regular Price
¥5,400
Unit Price
per 
Save 35%
JOR JOR 2077 Army Briefs Color Green
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
Save 35%
JOR JOR 2078 Winter Long Johns Color Black
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥5,200
Unit Price
per