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 35%
Clever Clever 1605 Spirit Briefs Color Green
¥2,800
¥2,800
¥4,300
Save 35%
Clever Clever 1638 Dynamic Briefs Color Green
¥3,000
¥3,000
¥4,600
Save 15%
Clever Clever 1605 Spirit Briefs Color Gray
¥4,100
¥4,100
¥4,800
Save 35%
Clever Clever 1605 Spirit Briefs Color Brown
¥2,800
¥2,800
¥4,300
Save 14%
Clever Clever 1615 Urbano Briefs Color Blue
¥3,800
¥3,800
¥4,400
Save 35%
Clever Clever 1641 Emphatic Briefs Color Blue
¥3,000
¥3,000
¥4,600
Save 15%
Clever Clever 1605 Spirit Briefs Color Black
¥4,100
¥4,100
¥4,800
Save 16%
Clever Clever 1612 Chakra Briefs Color Black
¥4,600
¥4,600
¥5,500
Save 14%
Clever Clever 1626 Yin Yang Briefs Color Black
¥4,400
¥4,400
¥5,100
Save 14%
Clever Clever 1643 Absolute Briefs Color Black
¥4,400
¥4,400
¥5,100
Save 15%
Xtremen Xtremen 91196 Jacquard Trunks Color White
¥3,500
¥3,500
¥4,100
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 15%
Xtremen Xtremen 91193 Printed Trunks Color Pumpkins
¥3,500
¥3,500
¥4,100
Save 15%
Xtremen Xtremen 91195 Printed Bikini Color Pumpkins
¥3,500
¥3,500
¥4,100
Save 35%
Xtremen Xtremen 91192 Jacquard Bikini Color Gray
¥2,200
¥2,200
¥3,400
Save 15%
Xtremen Xtremen 91196 Jacquard Trunks Color Gray
¥3,500
¥3,500
¥4,100
Save 35%
Xtremen Xtremen 91197 Jacquard Bikini Color Gray
¥2,200
¥2,200
¥3,400
Save 15%
Xtremen Xtremen 91196 Jacquard Trunks Color Dark Blue
¥3,500
¥3,500
¥4,100
Save 35%
Xtremen Xtremen 91197 Jacquard Bikini Color Dark Blue
¥2,200
¥2,200
¥3,400
Save 15%
Xtremen Xtremen 91196 Jacquard Trunks Color Black
¥3,500
¥3,500
¥4,100
Save 35%
Xtremen Xtremen 91197 Jacquard Bikini Color Black
¥2,200
¥2,200
¥3,400
Save 33%
Roger Smuth Roger Smuth RS014 Jockstrap Color Black
¥1,600
¥1,600
¥2,400
Save 35%
Roger Smuth Roger Smuth RS018 Jockstrap Color Burgundy
¥3,200
¥3,200
¥4,900
Save 33%
Roger Smuth Roger Smuth RS018 Jockstrap Color Blue
¥1,600
¥1,600
¥2,400
Save 33%
Roger Smuth Roger Smuth RS030 Briefs Color Gray
¥1,600
¥1,600
¥2,400
Save 33%
Roger Smuth Roger Smuth RS014 Jockstrap Color White
¥1,600
¥1,600
¥2,400
Save 33%
Roger Smuth Roger Smuth RS030 Briefs Color Black
¥1,600
¥1,600
¥2,400
Save 33%
Roger Smuth Roger Smuth RS013 Jockstrap Color Burgundy
¥1,600
¥1,600
¥2,400