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 34%
Clever Clever 1599 Natura Trunks Color Black
¥3,100
¥3,100
¥4,700
Save 34%
Clever Clever 1602 Oasis Trunks Color Black
¥3,100
¥3,100
¥4,700
Xtremen Xtremen 91180 Microfiber Trunks Color Silver
¥4,500
¥4,500
¥0
Save 34%
Xtremen Xtremen 91181 Microfiber Trunks Color Pink
¥2,300
¥2,300
¥3,500
Xtremen Xtremen 91183 Microfiber Bikini Color Pink
¥3,800
¥3,800
¥0
Save 34%
Xtremen Xtremen 91187 Tulle Mesh Bikini Color Pink
¥2,300
¥2,300
¥3,500
Save 34%
Xtremen Xtremen 91188 Tulle Mesh Trunks Color Pink
¥2,300
¥2,300
¥3,500
Xtremen Xtremen 91181 Microfiber Trunks Color Lilac
¥3,800
¥3,800
¥0
Xtremen Xtremen 91183 Microfiber Bikini Color Lilac
¥3,800
¥3,800
¥0
Save 34%
Xtremen Xtremen 91181 Microfiber Trunks Color Green
¥2,300
¥2,300
¥3,500
Xtremen Xtremen 91183 Microfiber Bikini Color Green
¥3,800
¥3,800
¥0
Save 34%
Xtremen Xtremen 91186 Mesh Bikini Color Green
¥2,300
¥2,300
¥3,500
Save 60%
DownUnder Apparel Basic Boxer Briefs In Black, Navy Blue and White. Menswear. For The Boys!
DownUnder Apparel Classic Boxer Briefs Navy
¥1,600
¥1,600
¥4,000
Save 60%
DownUnder Apparel Basic Boxer Briefs In Black, Navy Blue and White. Menswear. For The Boys!
DownUnder Apparel Classic Boxer Briefs Black
¥1,600
¥1,600
¥4,000
Save 60%
DownUnder Apparel Basic Boxer Briefs In Black, Navy Blue and White. Menswear. For The Boys!
DownUnder Apparel Classic Boxer Briefs White
¥1,600
¥1,600
¥4,000