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 36%
Clever Clever 1599 Natura Trunks Color Black
¥3,000
¥3,000
¥4,700
Save 36%
Clever Clever 1602 Oasis Trunks Color Black
¥3,000
¥3,000
¥4,700
Save 16%
Xtremen Xtremen 91180 Microfiber Trunks Color Silver
¥3,800
¥3,800
¥4,500
Save 35%
Xtremen Xtremen 91181 Microfiber Trunks Color Pink
¥2,200
¥2,200
¥3,400
Save 16%
Xtremen Xtremen 91183 Microfiber Bikini Color Pink
¥3,200
¥3,200
¥3,800
Save 35%
Xtremen Xtremen 91187 Tulle Mesh Bikini Color Pink
¥2,200
¥2,200
¥3,400
Save 35%
Xtremen Xtremen 91188 Tulle Mesh Trunks Color Pink
¥2,200
¥2,200
¥3,400
Save 16%
Xtremen Xtremen 91181 Microfiber Trunks Color Lilac
¥3,200
¥3,200
¥3,800
Save 16%
Xtremen Xtremen 91183 Microfiber Bikini Color Lilac
¥3,200
¥3,200
¥3,800
Save 35%
Xtremen Xtremen 91181 Microfiber Trunks Color Green
¥2,200
¥2,200
¥3,400
Save 16%
Xtremen Xtremen 91183 Microfiber Bikini Color Green
¥3,200
¥3,200
¥3,800
Save 35%
Xtremen Xtremen 91186 Mesh Bikini Color Green
¥2,200
¥2,200
¥3,400
Save 59%
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
¥3,900
Save 59%
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
¥3,900
Save 59%
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
¥3,900