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.

Save 15%
ErgoWear ErgoWear EW1619 MAX XX Trunks Color Black
Regular Price
¥4,700
Sale Price
¥4,700
Regular Price
¥5,500
Unit Price
per 
Save 15%
ErgoWear ErgoWear EW1620 MAX XX Boxer Briefs Color Black
Regular Price
¥5,200
Sale Price
¥5,200
Regular Price
¥6,100
Unit Price
per 
Save 35%
Clever Clever 1508 Tethis Trunks Color Yellow
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
Save 33%
Clever Clever 1523 Navigate Briefs Color Red
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 16%
Clever Clever 1524 Continental Trunks Color Petrol Blue
Regular Price
¥3,700
Sale Price
¥3,700
Regular Price
¥4,400
Unit Price
per 
Save 34%
Clever Clever 1528 Arctic Boxer Briefs Color Petrol Blue
Regular Price
¥3,800
Sale Price
¥3,800
Regular Price
¥5,800
Unit Price
per 
Save 14%
Clever Clever 1529 Glacier Trunks Color Green
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥3,700
Unit Price
per 
Save 35%
Clever Clever 1523 Navigate Briefs Color Gray
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥4,900
Unit Price
per 
Save 35%
Clever Clever 1529 Glacier Trunks Color Gray
Regular Price
¥2,200
Sale Price
¥2,200
Regular Price
¥3,400
Unit Price
per 
Save 33%
Clever Clever 1527 Strait Briefs Color Dark Blue
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 35%
Clever Clever 1508 Tethis Trunks Color Blue
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
Save 36%
ErgoWear ErgoWear EW1612 MAX SE Jockstrap Color Royal Blue
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥5,300
Unit Price
per 
Save 36%
ErgoWear ErgoWear EW1615 MAX SE Jockstrap Color Red
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥5,300
Unit Price
per 
Save 36%
ErgoWear ErgoWear EW1613 MAX SE Jockstrap Color Neon Yellow
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥5,300
Unit Price
per 
Save 36%
ErgoWear ErgoWear EW1614 MAX SE Jockstrap Color Black
Regular Price
¥3,400
Sale Price
¥3,400
Regular Price
¥5,300
Unit Price
per 
Save 33%
Male Power Male Power 147-288 Show Stopper Mini Short Color Silver Mesh Dot
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
Male Power Male Power 131-293 Your Lace Or Mine Pouch Short Color Red-White-Blue
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 16%
Male Power Male Power 145-294 Hazy Dayz Pouch Short Color Pot Leaf
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥3,100
Unit Price
per 
Save 16%
Male Power Male Power 145-294 Hazy Dayz Pouch Short Color Mushrooms
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥3,100
Unit Price
per 
Save 33%
Male Power Male Power 131-293 Your Lace Or Mine Pouch Short Color Multi
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
Male Power Male Power 130-290 Marble Mesh Micro Mini Short Color Light Blue
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 13%
Male Power Male Power 145-286 Dirty Denim Mini Short Color Denim Print
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥3,200
Unit Price
per 
Save 16%
Male Power Male Power 145-285 Petal Power Pouch Short Color Daisy Print
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥3,100
Unit Price
per 
Save 16%
Male Power Male Power 126-289 Lucifer Cut Out Short Color Burgundy
Regular Price
¥3,100
Sale Price
¥3,100
Regular Price
¥3,700
Unit Price
per 
Save 35%
Male Power Male Power 141-292 Cut It Out Cut Out Mini Short Color Blue-Green-White
Regular Price
¥2,200
Sale Price
¥2,200
Regular Price
¥3,400
Unit Price
per 
Save 16%
Male Power Male Power 126-289 Lucifer Cut Out Short Color Black
Regular Price
¥3,100
Sale Price
¥3,100
Regular Price
¥3,700
Unit Price
per 
Save 35%
Male Power Male Power 130-290 Marble Mesh Micro Mini Short Color Black
Regular Price
¥2,000
Sale Price
¥2,000
Regular Price
¥3,100
Unit Price
per 
Save 35%
Male Power Male Power 384-288 Show Stopper Jock Color Silver Mesh Dot
Regular Price
¥2,200
Sale Price
¥2,200
Regular Price
¥3,400
Unit Price
per 
Save 36%
Male Power Male Power 331-293 Your Lace Or Mine Jock Color Red-White-Blue
Regular Price
¥1,800
Sale Price
¥1,800
Regular Price
¥2,800
Unit Price
per 
Save 14%
Male Power Male Power 390-294 Hazy Dayz Jock Color Pot Leaf
Regular Price
¥2,400
Sale Price
¥2,400
Regular Price
¥2,800
Unit Price
per