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%
Clever Clever 1471 Heavenly Trunks Color White
¥4,900
¥4,900
¥5,800
Save 35%
Clever Clever 1457 Grace Briefs Color Gray
¥3,400
¥3,400
¥5,200
Save 14%
Clever Clever 1451 Purity Trunks Color Dark Blue
¥4,300
¥4,300
¥5,000
Save 14%
Clever Clever 1452 Purity Bikini Color Dark Blue
¥4,300
¥4,300
¥5,000
Save 35%
Clever Clever 1447 Fable Briefs Color Blue
¥3,200
¥3,200
¥4,900
Save 32%
Clever Clever 1458 Figure Trunks Color Blue
¥1,700
¥1,700
¥2,500
Save 33%
Clever Clever 1459 Figure Bikini Color Blue
¥2,800
¥2,800
¥4,200
Save 35%
Clever Clever 1466 Misty Jockstrap Color Black
¥3,400
¥3,400
¥5,200
Save 15%
Clever Clever 1469 Audacity Bikini Color Black
¥4,600
¥4,600
¥5,400
Save 32%
Clever Clever 1470 Audacity Jockstrap Color Black
¥1,700
¥1,700
¥2,500
Save 16%
Clever Clever 1471 Heavenly Trunks Color Black
¥4,900
¥4,900
¥5,800
SOLD OUT
Clever Clever 1472 Heavenly Briefs Color Black
¥1,000
¥1,000
¥0
Save 15%
Xtremen Xtremen 91157 Capriati Trunks Color Silver
¥3,400
¥3,400
¥4,000
Save 32%
Xtremen Xtremen 91169 Mesh Briefs Color Rosewood
¥1,700
¥1,700
¥2,500
Save 15%
Xtremen Xtremen 91157 Capriati Trunks Color Light Blue
¥3,400
¥3,400
¥4,000
Save 15%
ErgoWear ErgoWear EW1476 MAX COTTON Trunks Color White
¥5,100
¥5,100
¥6,000
SOLD OUT
ErgoWear ErgoWear EW1597 X4D Trunks Color Smoke Blue
¥5,500
¥5,500
¥6,500
SOLD OUT
ErgoWear ErgoWear EW1598 X4D Boxer Briefs Color Smoke Blue
¥5,100
¥5,100
¥7,800
SOLD OUT
ErgoWear ErgoWear EW1593 X4D Trunks Color Silver Gray
¥4,200
¥4,200
¥6,500
SOLD OUT
ErgoWear ErgoWear EW1594 X4D Boxer Briefs Color Silver Gray
¥5,100
¥5,100
¥7,800
SOLD OUT
ErgoWear ErgoWear EW1601 X4D Trunks Color Navy Blue
¥4,200
¥4,200
¥6,500
SOLD OUT
ErgoWear ErgoWear EW1481 MAX COTTON Boxer Briefs Color Garnet
¥4,300
¥4,300
¥6,600
SOLD OUT
ErgoWear ErgoWear EW1589 X4D Trunks Color Dusty Pink
¥4,200
¥4,200
¥6,500
SOLD OUT
ErgoWear ErgoWear EW1484 MAX COTTON Trunks Color Black
¥3,900
¥3,900
¥6,000
SOLD OUT
ErgoWear ErgoWear EW1602 X4D Boxer Briefs Color Navy Blue
¥5,100
¥5,100
¥7,800
Save 35%
Private Structure Private Structure MOUX4103 Mo Lite Mid Waist Trunks Color White
¥2,600
¥2,600
¥4,000
Private Structure Private Structure SCUS4529 Classic Mid Waist Mini Briefs Color Red
¥3,900
¥3,900
Private Structure Private Structure SCUS4529 Classic Mid Waist Mini Briefs Color Purple
¥3,900
¥3,900
Save 35%
Private Structure Private Structure MOUX4104 Mo Lite Mid Waist Mini Briefs Color Navy
¥2,600
¥2,600
¥4,000
Private Structure Private Structure SCUS4530 Classic Mid Waist Trunks Color Navy
¥4,000
¥4,000