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 16%
Xtremen Xtremen 91201 Jacquard Bikini Color White
¥3,200
¥3,200
¥3,800
Save 15%
Xtremen Xtremen 91199 Jacquard Trunks Color Gray
¥3,500
¥3,500
¥4,100
Save 16%
Xtremen Xtremen 91201 Jacquard Bikini Color Gray
¥3,200
¥3,200
¥3,800
Save 14%
Xtremen Xtremen 91202 Microfiber Trunks Color Gray
¥3,800
¥3,800
¥4,400
Save 15%
Xtremen Xtremen 91204 Microfiber Bikini Color Gray
¥3,500
¥3,500
¥4,100
Save 15%
Xtremen Xtremen 91199 Jacquard Trunks Color Dark Blue
¥3,500
¥3,500
¥4,100
Save 16%
Xtremen Xtremen 91201 Jacquard Bikini Color Dark Blue
¥3,200
¥3,200
¥3,800
Save 14%
Xtremen Xtremen 91202 Microfiber Trunks Color Cherry
¥3,800
¥3,800
¥4,400
Save 15%
Xtremen Xtremen 91204 Microfiber Bikini Color Cherry
¥3,500
¥3,500
¥4,100
Save 14%
Xtremen Xtremen 91202 Microfiber Trunks Color Black
¥3,800
¥3,800
¥4,400
Save 15%
Xtremen Xtremen 91204 Microfiber Bikini Color Black
¥3,500
¥3,500
¥4,100
Save 16%
Xtremen Xtremen 91190 Jacquard Trunks Color Royal Blue
¥3,200
¥3,200
¥3,800
Save 16%
Xtremen Xtremen 91190 Jacquard Trunks Color Red
¥3,200
¥3,200
¥3,800
Save 16%
Xtremen Xtremen 91190 Jacquard Trunks Color Gray
¥3,200
¥3,200
¥3,800
Save 15%
Clever Clever 5373 Australian Latin Briefs Color Black
¥3,500
¥3,500
¥4,100
Save 16%
Xtremen Xtremen 91154 Tulle mesh Trunks Color Navy
¥3,200
¥3,200
¥3,800
Doreanse Doreanse 1281-TAN Hang-loose Bikini Brief Color Tan
¥2,400
¥2,400
¥0
Save 15%
Unico Unico 24080101117 Trino Briefs Color 99-Printed
¥4,000
¥4,000
¥4,700
Save 15%
Unico Unico 24080100322 Ardid Boxer Briefs Color 99-Black
¥5,300
¥5,300
¥6,200
Save 15%
Unico Unico 24080101110 Infinito Briefs Color 46-Blue
¥4,000
¥4,000
¥4,700
Save 15%
Unico Unico 24080101105 Cairel Briefs Color 43-Green
¥4,000
¥4,000
¥4,700
Save 15%
Unico Unico 24080101112 Hilada Briefs Color 43-Blue
¥4,000
¥4,000
¥4,700
Save 16%
HAWAI HAWAI 42380 Printed Briefs Color Green
¥3,200
¥3,200
¥3,800
Save 16%
HAWAI HAWAI 42430 Printed Briefs Color Gray
¥2,600
¥2,600
¥3,100
Save 16%
HAWAI HAWAI 42431 Printed Briefs Color Cocoa
¥2,600
¥2,600
¥3,100
Save 16%
HAWAI HAWAI 42380 Printed Briefs Color Black
¥3,200
¥3,200
¥3,800
Save 16%
HAWAI HAWAI 42431 Printed Briefs Color Blue
¥2,600
¥2,600
¥3,100
Save 16%
HAWAI HAWAI 42430 Printed Briefs Color Blue
¥2,600
¥2,600
¥3,100
Save 14%
Clever Clever 1626 Yin Yang Briefs Color White
¥4,400
¥4,400
¥5,100
Save 14%
Clever Clever 1636 Pacif Briefs Color Pink
¥4,400
¥4,400
¥5,100