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 35%
Xtremen Xtremen 91173 Printed Trunks Color Fire
¥2,400
¥2,400
¥3,700
Save 14%
Xtremen Xtremen 91170 Printed Trunks Color Cubes
¥3,200
¥3,200
¥3,700
Save 35%
Xtremen Xtremen 91172 Printed Bikini Color Cubes
¥2,200
¥2,200
¥3,400
Save 35%
Xtremen Xtremen 91173 Printed Trunks Color Cubes
¥2,400
¥2,400
¥3,700
Save 14%
Xtremen Xtremen 91170 Printed Trunks Color Bows
¥3,200
¥3,200
¥3,700
Save 14%
Xtremen Xtremen 91172 Printed Bikini Color Bows
¥3,200
¥3,200
¥3,700
Save 35%
Xtremen Xtremen 91173 Printed Trunks Color Bows
¥2,400
¥2,400
¥3,700
Save 15%
Xtremen Xtremen 91174 Tulle Mesh Bikini Color Black
¥3,400
¥3,400
¥4,000
Save 14%
Xtremen Xtremen 91175 Microfiber Trunks Color Black
¥3,200
¥3,200
¥3,700
Save 14%
Xtremen Xtremen 91177 Microfiber Bikini Color Black
¥3,200
¥3,200
¥3,700
Save 15%
Clever Clever 1565 Destellos Trunks Color Silver
¥4,000
¥4,000
¥4,700
Save 15%
Clever Clever 1568 Shine Trunks Color Pink
¥5,200
¥5,200
¥6,100
Save 15%
Clever Clever 1565 Destellos Trunks Color Petrol Blue
¥4,000
¥4,000
¥4,700
Save 15%
Clever Clever 1578 Coque Boxer Briefs Color Orange
¥5,200
¥5,200
¥6,100
Save 34%
Clever Clever 1560 Malba Boxer Briefs Color Grape
¥3,800
¥3,800
¥5,800
Save 14%
Clever Clever 1582 Ramo Trunks Color Grape
¥4,300
¥4,300
¥5,000
Save 35%
Clever Clever 1583 Ramo Briefs Color Grape
¥3,000
¥3,000
¥4,600
Save 15%
Clever Clever 1575 Cambodia Trunks Color Blue
¥5,200
¥5,200
¥6,100
Save 35%
Clever Clever 1599 Natura Trunks Color Black
¥3,000
¥3,000
¥4,600
Save 35%
Clever Clever 1602 Oasis Trunks Color Black
¥3,000
¥3,000
¥4,600
Save 16%
Xtremen Xtremen 91180 Microfiber Trunks Color Silver
¥3,700
¥3,700
¥4,400
Save 35%
Xtremen Xtremen 91181 Microfiber Trunks Color Pink
¥2,200
¥2,200
¥3,400
Save 14%
Xtremen Xtremen 91183 Microfiber Bikini Color Pink
¥3,200
¥3,200
¥3,700
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 14%
Xtremen Xtremen 91181 Microfiber Trunks Color Lilac
¥3,200
¥3,200
¥3,700
Save 14%
Xtremen Xtremen 91183 Microfiber Bikini Color Lilac
¥3,200
¥3,200
¥3,700
Save 35%
Xtremen Xtremen 91181 Microfiber Trunks Color Green
¥2,200
¥2,200
¥3,400
Save 14%
Xtremen Xtremen 91183 Microfiber Bikini Color Green
¥3,200
¥3,200
¥3,700
Save 35%
Xtremen Xtremen 91186 Mesh Bikini Color Green
¥2,200
¥2,200
¥3,400