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.

ErgoWear ErgoWear EW1627 MAX XX Trunks Color Light Teal
Regular Price
$35.84
Sale Price
$35.84
Regular Price
Unit Price
per 
ErgoWear ErgoWear EW1628 MAX XX Boxer Briefs Color Light Teal
Regular Price
$39.94
Sale Price
$39.94
Regular Price
Unit Price
per 
ErgoWear ErgoWear EW1635 MAX XX Trunks Color Dark Blue
Regular Price
$35.84
Sale Price
$35.84
Regular Price
Unit Price
per 
ErgoWear ErgoWear EW1636 MAX XX Boxer Briefs Color Dark Blue
Regular Price
$39.94
Sale Price
$39.94
Regular Price
Unit Price
per 
ErgoWear ErgoWear EW1623 MAX XX Trunks Color Burgundy
Regular Price
$35.84
Sale Price
$35.84
Regular Price
Unit Price
per 
ErgoWear ErgoWear EW1624 MAX XX Boxer Briefs Color Burgundy
Regular Price
$39.94
Sale Price
$39.94
Regular Price
Unit Price
per 
ErgoWear ErgoWear EW1631 MAX XX Trunks Color Blue Fog
Regular Price
$35.84
Sale Price
$35.84
Regular Price
Unit Price
per 
ErgoWear ErgoWear EW1632 MAX XX Boxer Briefs Color Blue Fog
Regular Price
$39.94
Sale Price
$39.94
Regular Price
Unit Price
per 
ErgoWear ErgoWear EW1619 MAX XX Trunks Color Black
Regular Price
$35.84
Sale Price
$35.84
Regular Price
Unit Price
per 
ErgoWear ErgoWear EW1620 MAX XX Boxer Briefs Color Black
Regular Price
$39.94
Sale Price
$39.94
Regular Price
Unit Price
per 
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 
SOLD OUT
ErgoWear ErgoWear EW0847 FEEL XV Soho Boxer Briefs Color Black
Regular Price
$23.24
Sale Price
$23.24
Regular Price
$35.76
Unit Price
per 
SALE
ErgoWear ErgoWear EW0622 FEEL XV Boxer Briefs Color White
Regular Price
$25.66
Sale Price
$25.66
Regular Price
$39.48
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 
SALE
ErgoWear ErgoWear EW0624 FEEL XV Boxer Briefs Color Gray
Regular Price
$25.66
Sale Price
$25.66
Regular Price
$39.48
Unit Price
per 
SALE
ErgoWear ErgoWear EW0632 FEEL XV Briefs Color White
Regular Price
$21.76
Sale Price
$21.76
Regular Price
$33.48
Unit Price
per 
SOLD OUT
ErgoWear ErgoWear EW0633 FEEL XV Briefs Color Blue
Regular Price
$21.76
Sale Price
$21.76
Regular Price
$33.48
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 
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 EW0753 X3D Original Boxer Briefs Color Rainbow
Regular Price
$21.29
Sale Price
$21.29
Regular Price
$32.76
Unit Price
per 
SALE
ErgoWear ErgoWear EW0827 FEEL XV Boxer Briefs Color Black-Gold
Regular Price
$25.94
Sale Price
$25.94
Regular Price
$39.90
Unit Price
per 
SALE
ErgoWear ErgoWear EW0825 FEEL XV Briefs Color Black-Gold
Regular Price
$21.33
Sale Price
$21.33
Regular Price
$32.82
Unit Price
per 
SALE
ErgoWear ErgoWear EW0848 FEEL XV Soho Trunks Color Black
Regular Price
$25.94
Sale Price
$25.94
Regular Price
$39.90
Unit Price
per 
SALE
ErgoWear ErgoWear EW0846 FEEL XV Soho Briefs Color Black
Regular Price
$21.33
Sale Price
$21.33
Regular Price
$32.82
Unit Price
per 
SALE
ErgoWear ErgoWear EW0840 FEEL XV Chrysler Briefs Color Silver
Regular Price
$21.33
Sale Price
$21.33
Regular Price
$32.82
Unit Price
per 
SALE
ErgoWear ErgoWear EW0842 FEEL XV Chrysler Trunks Color Silver
Regular Price
$25.94
Sale Price
$25.94
Regular Price
$39.90
Unit Price
per 
SOLD OUT
ErgoWear ErgoWear EW0890 FEEL XV Long Johns Color Black
Regular Price
$45.42
Sale Price
$45.42
Regular Price
$69.88
Unit Price
per 
SALE
ErgoWear ErgoWear EW0934 FEEL Modal Long Boxer Briefs Color Burgundy
Regular Price
$19.42
Sale Price
$19.42
Regular Price
$29.88
Unit Price
per