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 35%
HAWAI HAWAI 42157 Solid Lace Briefs Color Cocoa
Regular Price
¥2,800
Sale Price
¥2,800
Regular Price
¥4,300
Unit Price
per 
Save 33%
HAWAI HAWAI 42192 Printed Microfiber Hip Briefs Color Dark Blue
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
HAWAI HAWAI 42171 Solid Microfiber Trunks Color Amber
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
HAWAI HAWAI 42168 Printed Microfiber Jockstrap Color Taupe
Regular Price
¥800
Sale Price
¥800
Regular Price
¥0
Unit Price
per 
Save 33%
HAWAI HAWAI 42181 Solid Microfiber Briefs Color Amber
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 14%
HAWAI HAWAI 42156 Solid Lace Briefs Color Vanilla
Regular Price
¥3,200
Sale Price
¥3,200
Regular Price
¥3,700
Unit Price
per 
Save 35%
HAWAI HAWAI 42182 Printed Microfiber Briefs Color Dark Blue
Regular Price
¥2,400
Sale Price
¥2,400
Regular Price
¥3,700
Unit Price
per 
Save 33%
HAWAI HAWAI 42182 Printed Microfiber Briefs Color Military Green
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
HAWAI HAWAI 42172 Printed Microfiber Trunks Color Dark Blue
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
Save 35%
Clever Clever 0559-1 Pride Briefs Color Grape
Regular Price
¥2,200
Sale Price
¥2,200
Regular Price
¥3,400
Unit Price
per 
Save 33%
Papi Papi UMPA048 2PK Microflex Brazilian Trunks Color Berry-Texture
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
Papi Papi UMPA048 2PK Microflex Brazilian Trunks Color Teal-Leopard
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Papi Papi UMPA048 2PK Microflex Brazilian Trunks Color Teal-Graphic
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
Save 33%
Papi Papi UMPA048 2PK Microflex Brazilian Trunks Color Red-Leopard
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
Papi Papi UMPA050 Fashion Microflex Brazilian Trunks Color Blue Pixel Print
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
Papi Papi UMPA050 Fashion Microflex Brazilian Trunks Color Orange Pixel Print
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
Papi Papi UMPA049 2PK Microflex Jockstrap Color Charcoal-Graphic
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Papi Papi UMPA050 Fashion Microflex Brazilian Trunks Color Purple Pixel Print
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
Papi Papi UMPA051 Fashion Microflex Brazilian Jockstrap Color Sunrise Multi Print
Regular Price
¥800
Sale Price
¥800
Regular Price
¥0
Unit Price
per 
Save 33%
Papi Papi UMPA051 Fashion Microflex Brazilian Jockstrap Color Ocean Multi Print
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Papi Papi UMPA050 Fashion Microflex Brazilian Trunks Color Sunset Multi Print
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
Papi Papi UMPA049 2PK Microflex Jockstrap Color Berry-Texture
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per 
Save 33%
Papi Papi UMPA048 2PK Microflex Brazilian Trunks Color Charcoal-Leopard
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
Papi Papi UMPA048 2PK Microflex Brazilian Trunks Color Red-Graphic
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
Papi Papi UMPA051 Fashion Microflex Brazilian Jockstrap Color Sunset Multi Print
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Papi Papi UMPA048 2PK Microflex Brazilian Trunks Color Charcoal-Graphic
Regular Price
¥1,400
Sale Price
¥1,400
Regular Price
¥0
Unit Price
per 
Save 33%
Papi Papi UMPA049 2PK Microflex Jockstrap Color Charcoal-Leopard
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Save 33%
Papi Papi UMPA051 Fashion Microflex Brazilian Jockstrap Color Blue Pixel Print
Regular Price
¥1,600
Sale Price
¥1,600
Regular Price
¥2,400
Unit Price
per 
Papi Papi UMPA048 2PK Microflex Brazilian Trunks Color Gray-Texture
Regular Price
¥1,400
Sale Price
¥1,400
Regular Price
¥0
Unit Price
per 
Papi Papi UMPA050 Fashion Microflex Brazilian Trunks Color Sunrise Multi Print
Regular Price
¥1,300
Sale Price
¥1,300
Regular Price
¥0
Unit Price
per