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.
Xtremen Xtremen 91139 Athletic Jockstrap Color Light Gray
¥3,200
¥3,200
¥0
Save 35%
Xtremen Xtremen 91125 Mesh Trunks Color Green
¥1,500
¥1,500
¥2,300
Xtremen Xtremen 91140 Ultra-soft Trunks Color Gray Cross
¥2,900
¥2,900
¥0
Xtremen Xtremen 91140 Ultra-soft Trunks Color Dark Gray
¥2,900
¥2,900
¥0
Xtremen Xtremen 91138 Mesh Briefs Color Dark Blue
¥3,600
¥3,600
¥0
Xtremen Xtremen 91140 Ultra-soft Trunks Color Dark Blue
¥2,900
¥2,900
¥0
Save 34%
Xtremen Xtremen 91116 Metallic Jockstrap Color Black
¥2,300
¥2,300
¥3,500
Save 34%
Xtremen Xtremen 91124 Lace Jockstrap Color Black
¥2,300
¥2,300
¥3,500
Save 36%
Xtremen Xtremen 91125 Mesh Trunks Color Black
¥3,400
¥3,400
¥5,300
Save 34%
Xtremen Xtremen 91135 Mesh Trunks Color Black
¥2,300
¥2,300
¥3,500
Save 34%
Xtremen Xtremen 91138 Mesh Briefs Color Black
¥2,100
¥2,100
¥3,200
Xtremen Xtremen 91140 Ultra-soft Trunks Color Black
¥2,900
¥2,900
¥0
Save 34%
Xtremen Xtremen 91128 Snake print Jockstrap Color Red
¥2,100
¥2,100
¥3,200
Save 35%
Xtremen Xtremen 91134 Mesh Jockstrap Color Red
¥1,500
¥1,500
¥2,300
Xtremen Xtremen 91133 Mesh Briefs Color Petrol
¥4,500
¥4,500
¥0
Save 34%
Xtremen Xtremen 91133 Mesh Briefs Color Fuchsia
¥2,700
¥2,700
¥4,100
Save 35%
Roger Smuth Roger Smuth RS080 Jockstrap Color White
¥1,500
¥1,500
¥2,300
Save 34%
Roger Smuth Roger Smuth RS082 Jockstrap Color White
¥4,000
¥4,000
¥6,100
Save 34%
Roger Smuth Roger Smuth RS080 Jockstrap Color Black
¥4,000
¥4,000
¥6,100
Save 34%
Roger Smuth Roger Smuth RS082 Jockstrap Color Black
¥4,000
¥4,000
¥6,100
Save 35%
Papi Papi UMPA108 2PK Microflex Performance Jockstrap Color Teal-Blue
¥1,500
¥1,500
¥2,300
Save 35%
Papi Papi UMPA107 2PK Microflex Performance Trunks Color Gray-Red
¥1,500
¥1,500
¥2,300
Papi Papi UMPA107 2PK Microflex Performance Trunks Color Gray-Blue
¥4,100
¥4,100
Save 35%
Papi Papi UMPA108 2PK Microflex Performance Jockstrap Color Blue-Red
¥1,500
¥1,500
¥2,300
Save 35%
Papi Papi UMPA108 2PK Microflex Performance Jockstrap Color Blue-Printed
¥1,500
¥1,500
¥2,300
Save 35%
Papi Papi UMPA108 2PK Microflex Performance Jockstrap Color Blue-Gray
¥1,500
¥1,500
¥2,300
Save 35%
Papi Papi UMPA108 2PK Microflex Performance Jockstrap Color Blue-Black
¥1,500
¥1,500
¥2,300
Save 35%
Papi Papi UMPA108 2PK Microflex Performance Jockstrap Color Black-Blue
¥1,500
¥1,500
¥2,300
Save 34%
JOR JOR 1841 Nitro Bikini Color White
¥2,700
¥2,700
¥4,100
Save 35%
JOR JOR 1842 Nitro Jockstrap Color White
¥1,500
¥1,500
¥2,300