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.
JOR JOR 1240 Beetle Trunks Color Printed
¥1,200
¥1,200
¥0
JOR JOR 1202 Rangers Trunks Color Blue
¥1,200
¥1,200
¥0
JOR JOR 1218 Army Briefs Color Green
¥900
¥900
¥0
JOR JOR 1231 Balance Trunks Color White
¥1,200
¥1,200
¥0
JOR JOR 1202 Rangers Trunks Color Red
¥1,200
¥1,200
¥0
JOR JOR 1231 Balance Trunks Color Purple
¥1,200
¥1,200
¥0
Save 35%
CandyMan CandyMan 99500 Zipper-Mesh Bikini Color Red
¥1,500
¥1,500
¥2,300
SOLD OUT
Pikante Pikante PIK 0339 Francis Briefs Color Black
¥900
¥900
¥0
SOLD OUT
Unico Unico 21062100501 Cold Mountain Long Johns Color 00-White
¥1,500
¥1,500
¥2,300
Save 16%
Unico Unico 19160301203 Hilarious Jockstrap Color 43-Green
¥2,700
¥2,700
¥3,200
Save 14%
Unico Unico 21050100101 Love Wins Trunks Color 00-White
¥4,400
¥4,400
¥5,100
Unico Unico 21050100102 Love Wins Trunks Color 99-Black
¥1,200
¥1,200
¥0
Save 35%
Unico Unico 21050201101 Love Wins Briefs Color 00-White
¥1,500
¥1,500
¥2,300
Xtremen Xtremen 51475C Microfiber Athletic Trunks Color Black
¥1,200
¥1,200
¥0
Save 33%
Xtremen Xtremen 91085 Microfiber Jacquard Jockstrap Color Red
¥2,000
¥2,000
¥3,000
Save 33%
Xtremen Xtremen 91084 Microfiber Pride Jockstrap Color Blue
¥2,000
¥2,000
¥3,000
Xtremen Xtremen 51477C Microfiber Jacquard Trunks Color Blue
¥1,200
¥1,200
¥0
Save 35%
Xtremen Xtremen 91083 Microfiber Pride Jockstrap Color Red
¥1,500
¥1,500
¥2,300
SOLD OUT
Xtremen Xtremen 91085 Microfiber Jacquard Jockstrap Color Royal
¥1,500
¥1,500
¥2,300
Xtremen Xtremen 51478C Microfiber Jacquard Trunks Color Gray
¥1,200
¥1,200
¥0
SOLD OUT
Xtremen Xtremen 51475C Microfiber Athletic Trunks Color Red
¥1,200
¥1,200
¥0
SOLD OUT
Xtremen Xtremen 91088 Microfiber Pride Briefs Color Turquoise
¥1,500
¥1,500
¥2,300
Xtremen Xtremen 51477C Microfiber Jacquard Trunks Color Green
¥1,200
¥1,200
¥0
Save 35%
Xtremen Xtremen 91082 Microfiber Pride Bikini Color Red
¥1,500
¥1,500
¥2,300
Save 15%
Xtremen Xtremen 91083 Microfiber Pride Jockstrap Color Blue
¥2,800
¥2,800
¥3,300
Save 33%
Xtremen Xtremen 91084 Microfiber Pride Jockstrap Color Red
¥2,000
¥2,000
¥3,000
Save 15%
Xtremen Xtremen 91085 Microfiber Jacquard Jockstrap Color Gray
¥2,800
¥2,800
¥3,300
Xtremen Xtremen 51478C Microfiber Jacquard Trunks Color Red
¥1,200
¥1,200
¥0
HAWAI HAWAI 41903 Solid Athletic Boxer Briefs Color Petrol
¥1,200
¥1,200
¥0
SOLD OUT
HAWAI HAWAI 42141 Solid Hip Briefs Color Caramel
¥900
¥900
¥0