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.

SOLD OUT
Roger Smuth Roger Smuth RS072 Trunks Color Navy
¥1,200
¥1,200
¥0
SOLD OUT
Roger Smuth Roger Smuth RS072 Trunks Color Burgundy
¥1,200
¥1,200
¥0
Save 14%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Turquoise
¥3,200
¥3,200
¥3,700
Save 14%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Red
¥3,200
¥3,200
¥3,700
Save 14%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Neon Green
¥3,200
¥3,200
¥3,700
Save 14%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Metal Green
¥3,200
¥3,200
¥3,700
SOLD OUT
Clever Clever 0611-1 Domain Briefs Color Green
¥2,100
¥2,100
¥3,200
HAWAI HAWAI 42255 Microfiber Trunks Color Sea Green
¥1,200
¥1,200
¥0
HAWAI HAWAI 42293 Microfiber Trunks Color Gray
¥1,200
¥1,200
¥0
Save 34%
ErgoWear ErgoWear EW1254 FEEL GR8 Bikini Color Silver
¥3,300
¥3,300
¥5,000
Save 15%
ErgoWear ErgoWear EW1247 FEEL GR8 Trunks Color Black
¥4,700
¥4,700
¥5,500
Doreanse Doreanse 1777-WHT Label Boxer Briefs Color White
¥1,200
¥1,200
¥0
SOLD OUT
Doreanse Doreanse 1401-PRN Tiger Stripes Briefs Color Printed
¥900
¥900
¥0
Doreanse Doreanse 1797-PRN Proud Boxer Briefs Color Printed
¥1,200
¥1,200
¥0
Doreanse Doreanse 1799-PRN Leopard Art Boxer Briefs Color Printed
¥1,200
¥1,200
¥0
Male Power Male Power 143-277 Hocus Pocus Uplift Mini Short Color Purple
¥3,200
¥3,200
Save 37%
Xtremen Xtremen 91140 Ultra-soft Trunks Color White
¥1,700
¥1,700
¥2,700
Xtremen Xtremen 91115 Metallic Briefs Color Black
¥4,200
¥4,200
¥0
SOLD OUT
Xtremen Xtremen 91139 Athletic Jockstrap Color Black
¥2,800
¥2,800
¥3,200
Xtremen Xtremen 70001 Plus
¥1,200
¥1,200
¥0
Xtremen Xtremen 70004 Plus
¥1,200
¥1,200
¥0
Xtremen Xtremen 70001 Plus
¥1,200
¥1,200
¥0
Save 35%
Xtremen Xtremen 70005 Plus
¥1,500
¥1,500
¥2,300
Xtremen Xtremen 70005 Plus
¥1,200
¥1,200
¥0
Xtremen Xtremen 70001 Plus
¥1,200
¥1,200
¥0
Xtremen Xtremen 70004 Plus
¥1,200
¥1,200
¥0
Clever Clever 1132 Sacred Trunks Color White
¥5,200
¥5,200
¥0
Clever Clever 1140 Glorious Briefs Color White
¥4,200
¥4,200
¥0
Save 35%
Clever Clever 1146 Celestial Briefs Color Red
¥1,500
¥1,500
¥2,300
Clever Clever 1129 Inner Trunks Color Green
¥1,200
¥1,200
¥0