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 14%
Male Power Male Power 390-294 Hazy Dayz Jock Color Mushrooms
Regular Price
¥2,400
Sale Price
¥2,400
Regular Price
¥2,800
Unit Price
per 
Save 14%
Male Power Male Power 331-293 Your Lace Or Mine Jock Color Multi
Regular Price
¥2,400
Sale Price
¥2,400
Regular Price
¥2,800
Unit Price
per 
Save 33%
Male Power Male Power 304-290 Marble Mesh Mini Moonshine Color Light Blue
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
SOLD OUT
Male Power Male Power 390-285 Petal Power Jock Color Daisy Print
Regular Price
¥1,800
Sale Price
¥1,800
Regular Price
¥2,800
Unit Price
per 
Save 13%
Male Power Male Power 394-289 Lucifer Strappy Jock Color Burgundy
Regular Price
¥2,700
Sale Price
¥2,700
Regular Price
¥3,100
Unit Price
per 
Save 13%
Male Power Male Power 302-292 Cut It Out Cut Out Moonshine Color Blue-Green-White
Regular Price
¥2,700
Sale Price
¥2,700
Regular Price
¥3,100
Unit Price
per 
Save 33%
Male Power Male Power 304-290 Marble Mesh Mini Moonshine Color Black
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 13%
Male Power Male Power 394-289 Lucifer Strappy Jock Color Black
Regular Price
¥2,700
Sale Price
¥2,700
Regular Price
¥3,100
Unit Price
per 
Save 15%
JOR JOR 1934 Dante Bikini Color White
Regular Price
¥3,500
Sale Price
¥3,500
Regular Price
¥4,100
Unit Price
per 
Save 33%
JOR JOR 1966 Dakar Bikini Color White
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
JOR JOR 1933 Garoto Bikini Color Red
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
JOR JOR 1943 College Trunks Color Red
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
Save 35%
JOR JOR 1944 College Briefs Color Red
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
Save 35%
JOR JOR 1945 College Bikini Color Red
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
Save 15%
JOR JOR 1934 Dante Bikini Color Mint Green
Regular Price
¥3,500
Sale Price
¥3,500
Regular Price
¥4,100
Unit Price
per 
Save 35%
JOR JOR 1969 Oporto Bikini Color Ivory
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
Save 35%
JOR JOR 1933 Garoto Bikini Color Green
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
Save 35%
JOR JOR 1937 Kioto Bikini Color Green
Regular Price
¥2,400
Sale Price
¥2,400
Regular Price
¥3,700
Unit Price
per 
Save 35%
JOR JOR 1940 Athletic Trunks Color Green
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
Save 33%
JOR JOR 1941 Athletic Briefs Color Green
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
JOR JOR 1943 College Trunks Color Green
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
JOR JOR 1944 College Briefs Color Green
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
JOR JOR 1945 College Bikini Color Green
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
JOR JOR 1946 College Jockstrap Color Green
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
JOR JOR 1950 Element Trunks Color Green
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 35%
JOR JOR 1951 Element Boxer Briefs Color Green
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
Save 33%
JOR JOR 1952 Element Briefs Color Green
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 35%
JOR JOR 1953 Element Bikini Color Green
Regular Price
¥2,600
Sale Price
¥2,600
Regular Price
¥4,000
Unit Price
per 
Save 33%
JOR JOR 1937 Kioto Bikini Color Gray
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 15%
JOR JOR 1934 Dante Bikini Color Candy Pink
Regular Price
¥3,500
Sale Price
¥3,500
Regular Price
¥4,100
Unit Price
per