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 15%
JUSTIN+SIMON JUSTIN+SIMON XSJ22 Cheek Briefs Color Black
¥3,300
¥3,300
¥3,900
Save 15%
Clever Clever 0604-1 Explore Trunks Color Green
¥3,300
¥3,300
¥3,900
Save 14%
HAWAI HAWAI 42152 Solid Lace Briefs Color Fuchsia
¥3,800
¥3,800
¥4,400
Save 33%
HAWAI HAWAI 42156 Solid Lace Briefs Color Fuchsia
¥1,600
¥1,600
¥2,400
SOLD OUT
HAWAI HAWAI 42255 Microfiber Trunks Color Sea Green
¥1,300
¥1,300
¥0
Save 35%
HAWAI HAWAI 42255 Microfiber Trunks Color Magenta
¥2,400
¥2,400
¥3,700
Save 35%
HAWAI HAWAI 42255 Microfiber Trunks Color Hazelnut
¥2,400
¥2,400
¥3,700
Save 33%
HAWAI HAWAI 42258 Microfiber Jockstrap Color Hazelnut
¥1,600
¥1,600
¥2,400
HAWAI HAWAI 42293 Microfiber Trunks Color Gray
¥1,300
¥1,300
¥0
Save 33%
HAWAI HAWAI 42296 Microfiber Jockstrap Color Gray
¥1,600
¥1,600
¥2,400
Save 35%
HAWAI HAWAI 42255 Microfiber Trunks Color Fuchsia
¥2,400
¥2,400
¥3,700
Save 15%
HAWAI HAWAI 42293 Microfiber Trunks Color Dark Blue
¥3,500
¥3,500
¥4,100
Save 36%
HAWAI HAWAI 42296 Microfiber Jockstrap Color Dark Blue
¥1,800
¥1,800
¥2,800
Save 34%
ErgoWear ErgoWear EW1254 FEEL GR8 Bikini Color Silver
¥3,500
¥3,500
¥5,300
Save 34%
ErgoWear ErgoWear EW1246 FEEL GR8 Bikini Color Black
¥3,500
¥3,500
¥5,300
Save 16%
ErgoWear ErgoWear EW1247 FEEL GR8 Trunks Color Black
¥4,900
¥4,900
¥5,800
Save 14%
ErgoWear ErgoWear EW1248 FEEL GR8 Boxer Briefs Color Black
¥5,500
¥5,500
¥6,400
Doreanse Doreanse 1403-PRN Persian Briefs Color Printed
¥2,500
¥2,500
¥0
Doreanse Doreanse 1799-PRN Leopard Art Boxer Briefs Color Printed
¥1,300
¥1,300
¥0
Save 15%
Male Power Male Power 143-277 Hocus Pocus Uplift Mini Short Color Purple
¥2,900
¥2,900
¥3,400
Save 33%
Male Power Male Power 145-278 Galactic Mini Short Color Printed
¥1,600
¥1,600
¥2,400
SOLD OUT
Xtremen Xtremen 91140 Ultra-soft Trunks Color White
¥1,800
¥1,800
¥2,800
Save 35%
Xtremen Xtremen 91139 Athletic Jockstrap Color Royal
¥2,000
¥2,000
¥3,100
Save 35%
Xtremen Xtremen 91139 Athletic Jockstrap Color Light Gray
¥2,000
¥2,000
¥3,100
Save 33%
Xtremen Xtremen 91125 Mesh Trunks Color Green
¥1,600
¥1,600
¥2,400
Save 14%
Xtremen Xtremen 91115 Metallic Briefs Color Black
¥3,800
¥3,800
¥4,400
Xtremen Xtremen 70001 Plus
¥1,300
¥1,300
¥0
Xtremen Xtremen 70005 Plus
¥1,300
¥1,300
¥0
Xtremen Xtremen 70004 Plus
¥1,300
¥1,300
¥0
Xtremen Xtremen 70001 Plus
¥1,300
¥1,300
¥0