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.

CandyMan CandyMan 99242 Jockstrap Color Black
Regular Price
¥3,900
Sale Price
¥3,900
Regular Price
¥0
Unit Price
per 
CandyMan CandyMan 99312 Jockstrap Color Burgundy
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥0
Unit Price
per 
CandyMan CandyMan 99393 Boxer Briefs Color Black
Regular Price
¥4,100
Sale Price
¥4,100
Regular Price
¥0
Unit Price
per 
Save 33%
Clever Clever 5317 Sweetness Piping Briefs Color White
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Clever Clever 2394 Attractive Boxer Briefs Color Brown
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
Save 33%
Clever Clever 5402 Senses Briefs Color White
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Doreanse Doreanse 1779-BLK Pouch Mini Trunk Color Black
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥0
Unit Price
per 
Doreanse Doreanse 1217-PRN Groovy Bikini Color Printed
Regular Price
¥2,500
Sale Price
¥2,500
Regular Price
¥0
Unit Price
per 
Doreanse Doreanse 1779-TRQ Pouch Mini Trunk Color Turquoise
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥0
Unit Price
per 
Doreanse Doreanse 1760-YLW Low-rise Trunk Color Yellow
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥0
Unit Price
per 
Doreanse Doreanse 1781-TRQ Naked Mini Trunk Color Turquoise
Regular Price
¥2,900
Sale Price
¥2,900
Regular Price
¥0
Unit Price
per 
Doreanse Doreanse 1215-WHT Naked Bikini Color White
Regular Price
¥1,000
Sale Price
¥1,000
Regular Price
¥0
Unit Price
per 
Doreanse Doreanse 1395-RED Aire Bikini Color Red
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥0
Unit Price
per 
Doreanse Doreanse 1377-BLK Boost Cheeky Brief Color Black
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥0
Unit Price
per 
Doreanse Doreanse 1377-FUC Boost Cheeky Brief Color Fuchsia
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥0
Unit Price
per 
Doreanse Doreanse 1779-YLW Pouch Mini Trunk Color Yellow
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥0
Unit Price
per 
ErgoWear ErgoWear EW0623 FEEL XV Boxer Briefs Color Blue
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
ErgoWear ErgoWear EW0622 FEEL XV Boxer Briefs Color White
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
ErgoWear ErgoWear EW0632 FEEL XV Briefs Color White
Regular Price
¥1,100
Sale Price
¥1,100
Regular Price
¥0
Unit Price
per 
HAWAI HAWAI 41921 Boxer Briefs Color Green
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
HAWAI HAWAI 41948 Boxer Briefs Color Blue Quartz
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
HAWAI HAWAI 41948 Boxer Briefs Color Military Green
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
Save 33%
HAWAI HAWAI 41948 Boxer Briefs Color White
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
HAWAI HAWAI 41945 Briefs Color White
Regular Price
¥1,000
Sale Price
¥1,000
Regular Price
¥0
Unit Price
per 
Joe Snyder Joe Snyder JS07-Pol Polyester Capri Color Black-Poly
Regular Price
¥3,700
Sale Price
¥3,700
Regular Price
¥0
Unit Price
per 
Joe Snyder Joe Snyder JS22-Pol Polyester Mini Cheek Color Fuchsia-Poly
Regular Price
¥5,300
Sale Price
¥5,300
Regular Price
¥0
Unit Price
per 
Joe Snyder Joe Snyder JS22-Pol Polyester Mini Cheek Color Yellow-Poly
Regular Price
¥5,300
Sale Price
¥5,300
Regular Price
¥0
Unit Price
per 
JOR JOR 0713 Cooper Boxer Briefs Color Beige
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
Male Power Male Power 153070 Heavy Metal Mini Short Boxer Briefs Color Gold
Regular Price
¥4,200
Sale Price
¥4,200
Regular Price
¥0
Unit Price
per 
Male Power Male Power 153070 Heavy Metal Mini Short Boxer Briefs Color Red
Regular Price
¥4,200
Sale Price
¥4,200
Regular Price
¥0
Unit Price
per