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 33%
HAWAI HAWAI 41946 Solid Athletic Jockstrap Color Royal Blue
¥1,600
¥1,600
¥2,400
Save 33%
HAWAI HAWAI 42052 Beige Athletic Jockstrap Color Ivory
¥1,600
¥1,600
¥2,400
Xtremen Xtremen 91085 Microfiber Jacquard Jockstrap Color Red
¥3,200
¥3,200
¥0
Save 34%
Xtremen Xtremen 91084 Microfiber Pride Jockstrap Color Blue
¥1,900
¥1,900
¥2,900
Save 34%
Xtremen Xtremen 91083 Microfiber Pride Jockstrap Color Red
¥1,900
¥1,900
¥2,900
Xtremen Xtremen 91082 Microfiber Pride Bikini Color Red
¥3,200
¥3,200
¥0
Save 34%
Xtremen Xtremen 91084 Microfiber Pride Jockstrap Color Red
¥1,900
¥1,900
¥2,900
Xtremen Xtremen 91083 Microfiber Pride Jockstrap Color Blue
¥3,200
¥3,200
¥0
Xtremen Xtremen 91085 Microfiber Jacquard Jockstrap Color Gray
¥3,200
¥3,200
¥0
HAWAI HAWAI 41946 Solid Athletic Jockstrap Color Pearl
¥800
¥800
¥0
Save 34%
HAWAI HAWAI 42121 Printed Athletic Trunks Color Black
¥2,100
¥2,100
¥3,200
Save 35%
HAWAI HAWAI 41946T Animal Print Athletic Jockstrap Color Amethyst
¥1,500
¥1,500
¥2,300
HAWAI HAWAI 41903 Solid Athletic Boxer Briefs Color Black
¥1,200
¥1,200
¥0
Save 34%
HAWAI HAWAI 42135 Geometric Mini Trunks Color Royal Blue
¥1,900
¥1,900
¥2,900
Save 33%
HAWAI HAWAI 41946 Solid Athletic Jockstrap Color Amethyst
¥1,600
¥1,600
¥2,400
HAWAI HAWAI 41946T Animal Print Athletic Jockstrap Color Pink
¥800
¥800
¥0
Save 17%
HAWAI HAWAI 42141 Solid Hip Briefs Color Pearl
¥3,000
¥3,000
¥3,600
Save 34%
HAWAI HAWAI 42134 Printed Mini Trunks Color Green
¥1,900
¥1,900
¥2,900
Save 34%
HAWAI HAWAI 4986 Solid Athletic Trunks Color Green
¥1,900
¥1,900
¥2,900
HAWAI HAWAI 41946 Solid Athletic Jockstrap Color Caramel
¥800
¥800
¥0
Save 35%
HAWAI HAWAI 41946 Solid Athletic Jockstrap Color Red
¥1,500
¥1,500
¥2,300
Save 35%
HAWAI HAWAI 41946 Solid Athletic Jockstrap Color Vanilla
¥1,500
¥1,500
¥2,300
Save 33%
HAWAI HAWAI 41946 Solid Athletic Jockstrap Color Coral
¥1,600
¥1,600
¥2,400
Save 34%
HAWAI HAWAI 42192 Printed Microfiber Hip Briefs Color Military Green
¥2,100
¥2,100
¥3,200
Save 34%
HAWAI HAWAI 42173 Printed Microfiber Trunks Color Royal Blue
¥2,300
¥2,300
¥3,500
Save 35%
HAWAI HAWAI 42183 Printed Microfiber Briefs Color Taupe
¥1,500
¥1,500
¥2,300
HAWAI HAWAI 42167 Printed Microfiber Jockstrap Color Dark Blue
¥800
¥800
¥0
HAWAI HAWAI 42167 Printed Microfiber Jockstrap Color Military Green
¥800
¥800
¥0
Save 33%
HAWAI HAWAI 42168 Printed Microfiber Jockstrap Color Royal Blue
¥1,600
¥1,600
¥2,400
Save 35%
HAWAI HAWAI 42166 Solid Microfiber Jockstrap Color Amber
¥1,500
¥1,500
¥2,300