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.
Unico Unico 1803010021499 Boxer Briefs Return Color Black
¥1,300
¥1,300
¥0
SOLD OUT
Unico Unico 1200080396 (1212010010696) Boxer Briefs Asfalto Microfiber Color Gray
¥3,200
¥3,200
¥3,800
Unico Unico 1200090196 (9612010020596) Boxer Briefs Asfalto Cotton Color Gray
¥1,300
¥1,300
¥0
Save 15%
Unico Unico 1200100300 (1212010030300) Boxer Briefs Cristalino Microfiber Color White
¥4,000
¥4,000
¥4,700
Save 17%
Unico Unico 9610020100 (9612010120100) Jockstrap Cristalino Cotton Color White
¥2,400
¥2,400
¥2,900
Xtremen Xtremen 91028 Piping Boxer Briefs Color Green
¥1,300
¥1,300
¥0
Xtremen Xtremen 91028 Piping Boxer Briefs Color Gray
¥1,300
¥1,300
¥0
Xtremen Xtremen 91029 Stripes Briefs Color White
¥1,000
¥1,000
¥0
Xtremen Xtremen 51437C Cycling Print Boxer Briefs Color Dark Gray
¥1,300
¥1,300
¥0
Xtremen Xtremen 51437C Cycling Print Boxer Briefs Color Light Gray
¥1,300
¥1,300
¥0
Xtremen Xtremen 51443C Jacquard Camouflage Boxer Briefs Color Black
¥1,300
¥1,300
¥0
Xtremen Xtremen 54446C Jacquard Stripes Boxer Briefs Color Blue
¥1,300
¥1,300
¥0
Xtremen Xtremen 51443C Jacquard Camouflage Boxer Briefs Color Gray
¥1,300
¥1,300
¥0
Xtremen Xtremen 54446C Jacquard Stripes Boxer Briefs Color Gray
¥1,300
¥1,300
¥0
SOLD OUT
Clever Clever 5412 Antonio Classic Briefs Color Beige
¥1,000
¥1,000
¥0
Doreanse Doreanse 1212-WHT Metro Jock Color White
¥3,200
¥3,200
¥0
HAWAI HAWAI 41953 Boxer Briefs Color Mint Cream
¥1,300
¥1,300
¥0
SOLD OUT
HAWAI HAWAI 41975 Briefs Color Mahogany
¥1,000
¥1,000
¥0
SOLD OUT
HAWAI HAWAI 41971 Boxer Briefs Color Mint Cream
¥1,300
¥1,300
¥0
HAWAI HAWAI 41972 Boxer Briefs Color Gray
¥1,300
¥1,300
¥0
SOLD OUT
HAWAI HAWAI 41852 Boxer Briefs Color White
¥1,300
¥1,300
¥0
HAWAI HAWAI 41953 Boxer Briefs Color Mahogany
¥1,300
¥1,300
¥0
Save 38%
Hidden Hidden 970 Open Trunks Color Black
¥1,500
¥1,500
¥2,400
Save 38%
Hidden Hidden 952 Mesh Trunks Color Beige
¥1,500
¥1,500
¥2,400
Save 38%
Hidden Hidden 961 Mesh Mini Trunks Color Beige
¥1,500
¥1,500
¥2,400
Save 38%
Hidden Hidden 965 Open Side Briefs Color Black
¥1,500
¥1,500
¥2,400
Save 38%
Hidden Hidden 953 Garterbelt Briefs Color Black
¥1,500
¥1,500
¥2,400
Save 38%
Hidden Hidden 964 Mesh side Trunks Color Black
¥1,500
¥1,500
¥2,400
SOLD OUT
Hidden Hidden 966 Mesh Bikini Color Black
¥1,900
¥1,900
¥2,900
Save 38%
Hidden Hidden 958 Open Side Briefs Color Black
¥1,500
¥1,500
¥2,400