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 36%
ErgoWear ErgoWear EW1613 MAX SE Jockstrap Color Neon Yellow
¥3,600
¥3,600
¥5,600
Save 36%
ErgoWear ErgoWear EW1614 MAX SE Jockstrap Color Black
¥3,600
¥3,600
¥5,600
Save 14%
ErgoWear ErgoWear EW1655 SLK Boxer Briefs Color Navy Blue
¥5,600
¥5,600
¥6,500
Save 14%
ErgoWear ErgoWear EW1659 SLK Boxer Briefs Color Burgundy
¥5,600
¥5,600
¥6,500
Save 14%
ErgoWear ErgoWear EW1663 SLK Boxer Briefs Color Black
¥5,600
¥5,600
¥6,500
Save 34%
ErgoWear ErgoWear EW1676 MAX FLOW Jockstrap Color Smoke Green
¥3,700
¥3,700
¥5,600
Save 14%
ErgoWear ErgoWear EW1680 MAX FLOW Boxer Briefs Color Smoke Green
¥5,600
¥5,600
¥6,500
Save 34%
ErgoWear ErgoWear EW1681 MAX FLOW Jockstrap Color Gray
¥3,700
¥3,700
¥5,600
Save 33%
JOR JOR 2077 Army Briefs Color Wine
¥2,800
¥2,800
¥4,200
Save 14%
JOR JOR 2081 Dublin Briefs Color Printed
¥4,900
¥4,900
¥5,700
Save 33%
JOR JOR 2077 Army Briefs Color Green
¥2,800
¥2,800
¥4,200
Save 15%
CandyMan CandyMan 99242 Jockstrap Color Black
¥3,400
¥3,400
¥4,000
Save 14%
CandyMan CandyMan 99393 Boxer Briefs Color Black
¥3,600
¥3,600
¥4,200
Doreanse Doreanse 1395-RED Aire Bikini Color Red
¥3,300
¥3,300
¥0
Save 32%
Papi Papi 705910-001 3PK 1X1 Rib Jockstrap Color Black
¥1,700
¥1,700
¥2,500
Save 32%
Papi Papi 980403-950 3PK Cotton Stretch Brief Color Red-Gray-Black
¥1,700
¥1,700
¥2,500
Save 32%
Papi Papi 980911-950 3PK Cotton Stretch Jockstrap Color Red-Gray-Black
¥1,700
¥1,700
¥2,500
Save 32%
Papi Papi 705910-999 3PK 1X1 Rib Jockstrap Color Black-Red-Turquoise
¥1,700
¥1,700
¥2,500
Save 32%
CandyMan CandyMan 99439 Floral Briefs Color Blue
¥1,700
¥1,700
¥2,500
Save 32%
CandyMan CandyMan 99466X Lace Briefs Color Black
¥1,700
¥1,700
¥2,500
Save 32%
CandyMan CandyMan 99468X Garter Briefs Color Black
¥1,700
¥1,700
¥2,500
Save 34%
CandyMan CandyMan 99495 Mesh Briefs Color Black
¥1,900
¥1,900
¥2,900
Save 32%
Papi Papi UMPA006 2PK Jockstrap Color Black-Blue
¥1,700
¥1,700
¥2,500
Papi Papi UMPA006 2PK Jockstrap Color Black-Gray
¥900
¥900
¥0
Papi Papi UMPA006 2PK Jockstrap Color Black-Orange
¥900
¥900
¥0
Save 16%
CandyMan CandyMan 99538 Lace Jockstrap Color Red
¥2,700
¥2,700
¥3,200
Save 16%
CandyMan CandyMan 99535 Bow Jockstrap Color Burgundy
¥2,700
¥2,700
¥3,200
Save 16%
CandyMan CandyMan 99538 Lace Jockstrap Color Black
¥2,700
¥2,700
¥3,200
Save 14%
CandyMan CandyMan 99312X Jockstrap Color Burgundy
¥3,700
¥3,700
¥4,300
Save 36%
CandyMan CandyMan 99312X Jockstrap Color Black
¥2,500
¥2,500
¥3,900