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.
HAWAI HAWAI 42431 Printed Briefs Color Cocoa
¥3,100
¥3,100
¥0
HAWAI HAWAI 42380 Printed Briefs Color Black
¥3,800
¥3,800
¥0
HAWAI HAWAI 42431 Printed Briefs Color Blue
¥3,100
¥3,100
¥0
HAWAI HAWAI 42430 Printed Briefs Color Blue
¥3,100
¥3,100
¥0
Clever Clever 1626 Yin Yang Briefs Color White
¥5,200
¥5,200
¥0
Clever Clever 1636 Pacif Briefs Color Pink
¥5,200
¥5,200
¥0
Save 34%
Clever Clever 1605 Spirit Briefs Color Green
¥2,900
¥2,900
¥4,400
Save 34%
Clever Clever 1638 Dynamic Briefs Color Green
¥3,100
¥3,100
¥4,700
Clever Clever 1605 Spirit Briefs Color Gray
¥4,800
¥4,800
¥0
Save 34%
Clever Clever 1605 Spirit Briefs Color Brown
¥2,900
¥2,900
¥4,400
Clever Clever 1615 Urbano Briefs Color Blue
¥4,500
¥4,500
¥0
Save 34%
Clever Clever 1641 Emphatic Briefs Color Blue
¥3,100
¥3,100
¥4,700
Clever Clever 1605 Spirit Briefs Color Black
¥4,800
¥4,800
¥0
Clever Clever 1612 Chakra Briefs Color Black
¥5,500
¥5,500
¥0
Clever Clever 1626 Yin Yang Briefs Color Black
¥5,200
¥5,200
¥0
Clever Clever 1643 Absolute Briefs Color Black
¥5,200
¥5,200
¥0
Save 17%
Xtremen Xtremen 91196 Jacquard Trunks Color White
¥3,500
¥3,500
¥4,200
Save 16%
Xtremen Xtremen 91197 Jacquard Bikini Color White
¥3,200
¥3,200
¥3,800
Save 16%
Xtremen Xtremen 91192 Jacquard Bikini Color Royal Blue
¥3,200
¥3,200
¥3,800
Save 16%
Xtremen Xtremen 91192 Jacquard Bikini Color Red
¥3,200
¥3,200
¥3,800
Save 17%
Xtremen Xtremen 91193 Printed Trunks Color Pumpkins
¥3,500
¥3,500
¥4,200
Save 17%
Xtremen Xtremen 91195 Printed Bikini Color Pumpkins
¥3,500
¥3,500
¥4,200
Save 32%
Xtremen Xtremen 91192 Jacquard Bikini Color Gray
¥2,300
¥2,300
¥3,400
Xtremen Xtremen 91196 Jacquard Trunks Color Gray
¥4,200
¥4,200
Save 32%
Xtremen Xtremen 91197 Jacquard Bikini Color Gray
¥2,300
¥2,300
¥3,400
Save 17%
Xtremen Xtremen 91196 Jacquard Trunks Color Dark Blue
¥3,500
¥3,500
¥4,200
Save 32%
Xtremen Xtremen 91197 Jacquard Bikini Color Dark Blue
¥2,300
¥2,300
¥3,400
Save 17%
Xtremen Xtremen 91196 Jacquard Trunks Color Black
¥3,500
¥3,500
¥4,200
Save 32%
Xtremen Xtremen 91197 Jacquard Bikini Color Black
¥2,300
¥2,300
¥3,400
Save 33%
Roger Smuth Roger Smuth RS014 Jockstrap Color Black
¥1,600
¥1,600
¥2,400