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 32%
Xtremen Xtremen 41313 Printed Briefs Color Royal
$15.00
$15.00
$22.00
Save 13%
Xtremen Xtremen 41313 Printed Briefs Color Orange
$21.00
$21.00
$24.00
Xtremen Xtremen 91130 Printed Jockstrap Color Orange
$8.00
$8.00
$0.00
Save 13%
Xtremen Xtremen 41313 Printed Briefs Color Green
$21.00
$21.00
$24.00
Save 33%
Xtremen Xtremen 91130 Printed Jockstrap Color Green
$16.00
$16.00
$24.00
Save 34%
Roger Smuth Roger Smuth RS077 Thongs Color White
$39.00
$39.00
$59.00
Save 15%
Roger Smuth Roger Smuth RS077 Thongs Color Burgundy
$56.00
$56.00
$66.00
Save 33%
Roger Smuth Roger Smuth RS072 Trunks Color Black
$16.00
$16.00
$24.00
Save 14%
ErgoWear ErgoWear EW1166 X4D Bikini Color White
$50.00
$50.00
$58.00
Save 16%
ErgoWear ErgoWear EW1167 X4D Trunks Color White
$53.00
$53.00
$63.00
Save 14%
ErgoWear ErgoWear EW1162 X4D Bikini Color Stonewash
$50.00
$50.00
$58.00
Save 16%
ErgoWear ErgoWear EW1163 X4D Trunks Color Stonewash
$53.00
$53.00
$63.00
Save 14%
ErgoWear ErgoWear EW1158 X4D Bikini Color Burgundy
$50.00
$50.00
$58.00
Save 16%
ErgoWear ErgoWear EW1159 X4D Trunks Color Burgundy
$53.00
$53.00
$63.00
Save 35%
ErgoWear ErgoWear EW1160 X4D Boxer Briefs Color Burgundy
$49.00
$49.00
$75.00
Save 16%
JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Yellow
$31.00
$31.00
$37.00
Save 15%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Wine
$34.00
$34.00
$40.00
Save 15%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Turquoise
$34.00
$34.00
$40.00
Save 16%
JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Royal Blue
$31.00
$31.00
$37.00
Save 15%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Red
$34.00
$34.00
$40.00
Save 15%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Purple
$34.00
$34.00
$40.00
Save 15%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Pink
$34.00
$34.00
$40.00
Save 15%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Opal Green
$34.00
$34.00
$40.00
Save 15%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Neon Green
$34.00
$34.00
$40.00
Save 15%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Navy
$34.00
$34.00
$40.00
Save 15%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Metal Green
$34.00
$34.00
$40.00
Save 16%
JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Hot Pink
$31.00
$31.00
$37.00
Save 16%
JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Gray
$31.00
$31.00
$37.00
Save 16%
JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Coral
$31.00
$31.00
$37.00
Save 16%
JUSTIN+SIMON JUSTIN+SIMON XSJ08 Classic Trunks Color Black
$31.00
$31.00
$37.00