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.

SALE
ErgoWear ErgoWear EW0623 FEEL XV Boxer Briefs Color Blue
Regular Price
$25.66
Sale Price
$25.66
Regular Price
$39.48
Unit Price
per 
ErgoWear ErgoWear EW0847 FEEL XV Soho Boxer Briefs Color Black
Regular Price
$35.76
Sale Price
$35.76
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0622 FEEL XV Boxer Briefs Color White
Regular Price
$39.48
Sale Price
$39.48
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0603 MAX XV Boxer Briefs Color Blue
Regular Price
$39.48
Sale Price
$39.48
Regular Price
$0.00
Unit Price
per 
SALE
ErgoWear ErgoWear EW0607 MAX XV Boxer Briefs Color White
Regular Price
$23.06
Sale Price
$23.06
Regular Price
$35.48
Unit Price
per 
ErgoWear ErgoWear EW0608 MAX XV Boxer Briefs Color Blue
Regular Price
$35.48
Sale Price
$35.48
Regular Price
$0.00
Unit Price
per 
SALE
ErgoWear ErgoWear EW0621 FEEL XV Boxer Briefs Color White
Regular Price
$25.66
Sale Price
$25.66
Regular Price
$39.48
Unit Price
per 
ErgoWear ErgoWear EW0624 FEEL XV Boxer Briefs Color Gray
Regular Price
$39.48
Sale Price
$39.48
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0629 FEEL XV Boxer Briefs Color Gray
Regular Price
$36.48
Sale Price
$36.48
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0632 FEEL XV Briefs Color White
Regular Price
$33.48
Sale Price
$33.48
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0633 FEEL XV Briefs Color Blue
Regular Price
$33.48
Sale Price
$33.48
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0634 FEEL XV Briefs Color Gray
Regular Price
$33.48
Sale Price
$33.48
Regular Price
$0.00
Unit Price
per 
SALE
ErgoWear ErgoWear EW0626 FEEL XV Boxer Briefs Color White
Regular Price
$23.71
Sale Price
$23.71
Regular Price
$36.48
Unit Price
per 
SALE
ErgoWear ErgoWear EW0631 FEEL XV Briefs Color White
Regular Price
$21.76
Sale Price
$21.76
Regular Price
$33.48
Unit Price
per 
SALE
ErgoWear ErgoWear EW0627 FEEL XV Boxer Briefs Color White
Regular Price
$23.71
Sale Price
$23.71
Regular Price
$36.48
Unit Price
per 
ErgoWear ErgoWear EW0628 FEEL XV Boxer Briefs Color Blue
Regular Price
$36.48
Sale Price
$36.48
Regular Price
$0.00
Unit Price
per 
SALE
ErgoWear ErgoWear EW0710 FEEL Modal Briefs Color White
Regular Price
$15.55
Sale Price
$15.55
Regular Price
$23.92
Unit Price
per 
SALE
ErgoWear ErgoWear EW0709 FEEL Modal Boxer Briefs Color White
Regular Price
$17.54
Sale Price
$17.54
Regular Price
$26.98
Unit Price
per 
SALE
ErgoWear ErgoWear EW0713 FEEL Modal Briefs Color Black
Regular Price
$15.55
Sale Price
$15.55
Regular Price
$23.92
Unit Price
per 
SALE
ErgoWear ErgoWear EW0708 FEEL Modal Long Boxer Briefs Color White
Regular Price
$19.36
Sale Price
$19.36
Regular Price
$29.78
Unit Price
per 
SALE
ErgoWear ErgoWear EW0711 FEEL Modal Long Boxer Briefs Color Black
Regular Price
$19.36
Sale Price
$19.36
Regular Price
$29.78
Unit Price
per 
SALE
ErgoWear ErgoWear EW0712 FEEL Modal Boxer Briefs Color Black
Regular Price
$17.54
Sale Price
$17.54
Regular Price
$26.98
Unit Price
per 
ErgoWear ErgoWear EW0753 X3D Original Boxer Briefs Color Rainbow
Regular Price
$32.76
Sale Price
$32.76
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0806 MAX XV Long Johns Color Navy
Regular Price
$69.46
Sale Price
$69.46
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0808 FEEL Long Johns Color Navy
Regular Price
$69.88
Sale Price
$69.88
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0853 FEEL Swim Mini-Trunk Color Combi
Regular Price
$54.36
Sale Price
$54.36
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0827 FEEL XV Boxer Briefs Color Black-Gold
Regular Price
$39.90
Sale Price
$39.90
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0825 FEEL XV Briefs Color Black-Gold
Regular Price
$32.82
Sale Price
$32.82
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0850 FEEL Swim Mini-Trunk Color Instant
Regular Price
$54.36
Sale Price
$54.36
Regular Price
$0.00
Unit Price
per 
ErgoWear ErgoWear EW0856 FEEL Swim Mini-Trunk Color Flamingo
Regular Price
$54.36
Sale Price
$54.36
Regular Price
$0.00
Unit Price
per