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.
Male Power Male Power 129-281 Easy Breezy Mini Short with Sleeve Color Black
¥3,200
¥3,200
Male Power Male Power 129-281 Easy Breezy Mini Short with Sleeve Color Aqua
¥3,200
¥3,200
Male Power Male Power 387-284 Rude Awakening Ring Jock Color Neon Orange
¥3,200
¥3,200
Male Power Male Power 334-282 S-naked Power Sock Color Black-Blue
¥3,000
¥3,000
Male Power Male Power 387-284 Rude Awakening Ring Jock Color Black
¥3,200
¥3,200
Male Power Male Power 399-281 Easy Breezy Jock Sleeve Color Aqua
¥3,000
¥3,000
Save 35%
Unico Unico 23050201103 Talante Briefs Color 29-Coral
¥1,500
¥1,500
¥2,300
Clever Clever 1242 Behemot Swim Trunks Color White
¥6,100
¥6,100
¥0
Save 34%
Clever Clever 1208 Euphoria Briefs Color Red
¥3,100
¥3,100
¥4,700
SOLD OUT
Clever Clever 1239 Eros Bikini Color Petrol
¥1,500
¥1,500
¥2,300
Clever Clever 1253 Cassiel Swim Trunks Color Blue
¥7,100
¥7,100
¥0
SOLD OUT
Clever Clever 1260 Euphoria Boxer Briefs Color Blue
¥1,200
¥1,200
¥0
SOLD OUT
Clever Clever 1239 Eros Bikini Color Black
¥1,500
¥1,500
¥2,300
Clever Clever 1212 Avalon Trunks Color Gray
¥4,200
¥4,200
¥0
Save 34%
Clever Clever 1211 Elysium Briefs Color Beige
¥2,700
¥2,700
¥4,100
Save 35%
ErgoWear ErgoWear EW1399 GYM Jockstrap Color Light Gray
¥3,300
¥3,300
¥5,100
Save 35%
ErgoWear ErgoWear EW1400 GYM Jockstrap Color Burgundy
¥3,300
¥3,300
¥5,100
Pikante Pikante PIK 1263 Ultra Athletic Pants Color Yellow
¥1,200
¥1,200
¥0
Save 34%
Xtremen Xtremen 91053-3 3PK Briefs Color Fuchsia-Green-Fuchsia
¥2,900
¥2,900
¥4,400
Save 34%
Xtremen Xtremen 91014-3 3PK Briefs Color Blue-Gray-Blue
¥2,900
¥2,900
¥4,400
Save 35%
HAWAI HAWAI 42306 Tummy Control Boxer Briefs Color Black
¥1,500
¥1,500
¥2,300
Private Structure Private Structure BAUT4388 Athlete Mini Briefs Color White League
¥4,000
¥4,000
¥0
SOLD OUT
Private Structure Private Structure BAUT4389 Athlete Trunks Color White League
¥1,200
¥1,200
¥0
Private Structure Private Structure PBUT4379 Bamboo Trunks Color Olive
¥4,000
¥4,000
¥0
Private Structure Private Structure BAUT4389 Athlete Trunks Color Navy Ranger
¥4,000
¥4,000
¥0
Private Structure Private Structure SCUX4070 Classic Trunks Color Baby Blush
¥3,200
¥3,200
¥0
Save 35%
ErgoWear ErgoWear EW1397 MAX Trunks Color Purple
¥3,300
¥3,300
¥5,100
Save 14%
ErgoWear ErgoWear EW1393 MAX Trunks Color Light Gray
¥4,400
¥4,400
¥5,100
Save 16%
ErgoWear ErgoWear EW1447 MAX SP Boxer Briefs Color Silver Gray
¥5,400
¥5,400
¥6,400
Save 34%
Clever Clever 1312 Hunch Trunks Color White
¥2,900
¥2,900
¥4,400