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%
Unico Unico 22120201108 Asfalto M22 Briefs Color 96-Dark Gray
¥1,600
¥1,600
¥2,400
Save 15%
Unico Unico 22120100207 Intenso M22 Boxer Briefs Color 99-Black
¥4,100
¥4,100
¥4,800
Save 33%
Xtremen Xtremen 91119 Lace Jockstrap Color Coral
¥1,600
¥1,600
¥2,400
Save 13%
Xtremen Xtremen 91118 Lace Jockstrap Color Black
¥2,600
¥2,600
¥3,000
Save 15%
Xtremen Xtremen 91119 Lace Jockstrap Color Black
¥2,900
¥2,900
¥3,400
Save 15%
Xtremen Xtremen 91127 Mesh Trunks Color Black
¥2,900
¥2,900
¥3,400
Save 33%
Roger Smuth Roger Smuth RS077 Thongs Color Navy
¥3,800
¥3,800
¥5,700
Save 14%
Roger Smuth Roger Smuth RS076 Ball Lifter Color Burgundy
¥4,300
¥4,300
¥5,000
SOLD OUT
Roger Smuth Roger Smuth RS075 Jockstrap Color Black
¥1,600
¥1,600
¥2,400
Save 14%
Roger Smuth Roger Smuth RS076 Ball Lifter Color Black
¥4,300
¥4,300
¥5,000
Save 14%
Roger Smuth Roger Smuth RS077 Thongs Color Black
¥5,400
¥5,400
¥6,300
Save 33%
Xtremen Xtremen 91125 Mesh Trunks Color Violet
¥1,600
¥1,600
¥2,400
Save 33%
Xtremen Xtremen 91138 Mesh Briefs Color Red
¥1,600
¥1,600
¥2,400
Save 33%
Xtremen Xtremen 91125 Mesh Trunks Color Petrol
¥3,600
¥3,600
¥5,400
Save 13%
Xtremen Xtremen 91140 Ultra-soft Trunks Color Gray Cross
¥2,600
¥2,600
¥3,000
Save 13%
Xtremen Xtremen 91140 Ultra-soft Trunks Color Dark Gray
¥2,600
¥2,600
¥3,000
Save 16%
Xtremen Xtremen 91138 Mesh Briefs Color Dark Blue
¥3,100
¥3,100
¥3,700
Save 13%
Xtremen Xtremen 91140 Ultra-soft Trunks Color Dark Blue
¥2,600
¥2,600
¥3,000
Save 33%
Xtremen Xtremen 91116 Metallic Jockstrap Color Black
¥2,400
¥2,400
¥3,600
Save 33%
Xtremen Xtremen 91124 Lace Jockstrap Color Black
¥1,600
¥1,600
¥2,400
Save 33%
Xtremen Xtremen 91125 Mesh Trunks Color Black
¥1,600
¥1,600
¥2,400
Save 33%
Xtremen Xtremen 91135 Mesh Trunks Color Black
¥1,600
¥1,600
¥2,400
Save 33%
Xtremen Xtremen 91138 Mesh Briefs Color Black
¥1,600
¥1,600
¥2,400
Save 13%
Xtremen Xtremen 91140 Ultra-soft Trunks Color Black
¥2,600
¥2,600
¥3,000
Save 33%
Xtremen Xtremen 91128 Snake print Jockstrap Color Red
¥2,200
¥2,200
¥3,300
Save 33%
Xtremen Xtremen 91134 Mesh Jockstrap Color Red
¥1,600
¥1,600
¥2,400
Save 33%
Xtremen Xtremen 91133 Mesh Briefs Color Petrol
¥1,600
¥1,600
¥2,400
Save 33%
Xtremen Xtremen 91133 Mesh Briefs Color Fuchsia
¥2,800
¥2,800
¥4,200
Save 35%
Roger Smuth Roger Smuth RS082 Jockstrap Color White
¥4,100
¥4,100
¥6,300
Save 35%
Roger Smuth Roger Smuth RS080 Jockstrap Color Black
¥4,100
¥4,100
¥6,300